diff --git a/methods/coseismic/Coseismic_Requirement_Validation.ipynb b/methods/coseismic/Coseismic_Requirement_Validation.ipynb
index cf91f1f..64b2909 100644
--- a/methods/coseismic/Coseismic_Requirement_Validation.ipynb
+++ b/methods/coseismic/Coseismic_Requirement_Validation.ipynb
@@ -288,9 +288,25 @@
    },
    "outputs": [],
    "source": [
-    "command = 'smallbaselineApp.py ' + str(config_file) + ' --dostep modify_network'\n",
+    "# Formulate ifgramStack file\n",
+    "ifgramStack_file = os.path.join(mintpy_dir, 'inputs/ifgramStack.h5')\n",
+    "\n",
+    "# Modify network - base command\n",
+    "command = f\"modify_network.py {ifgramStack_file} -t {config_file}\"\n",
+    "\n",
+    "# Check whether exclusions specified in my_sites file\n",
+    "if site_info.get('ifgExcludePair') not in [None, 'auto', 'no']:\n",
+    "    command += f\" --exclude-ifg {site_info.get('ifgExcludePair')}\"\n",
+    "\n",
+    "if site_info.get('ifgExcludeDate') not in [None, 'auto', 'no']:\n",
+    "    command += f\" --exclude-date {site_info.get('ifgExcludeDate')}\"\n",
+    "\n",
+    "if site_info.get('ifgExcludeIndex') not in [None, 'auto', 'no']:\n",
+    "    command += f\" --exclude-ifg-index {site_info.get('ifgExcludeIndex')} \"\n",
+    "\n",
+    "# Run command\n",
     "process = subprocess.run(command, shell=True)\n",
-    "plot_network.main(['inputs/ifgramStack.h5'])"
+    "plot_network.main([ifgramStack_file])"
    ]
   },
   {
diff --git a/methods/secular/Secular_Requirement_Validation.ipynb b/methods/secular/Secular_Requirement_Validation.ipynb
index fd82084..612141b 100644
--- a/methods/secular/Secular_Requirement_Validation.ipynb
+++ b/methods/secular/Secular_Requirement_Validation.ipynb
@@ -150,7 +150,7 @@
     "aria_gunw_version = \"3_0_1\"\n",
     "\n",
     "rundate = \"20250826\"  # Date of this Cal/Val run\n",
-    "version = \"1\"         # Version of this Cal/Val run\n",
+    "version = \"1b\"         # Version of this Cal/Val run\n",
     "custom_sites = \"/home/jovyan/my_sites.txt\"  # Path to custom site metadata\n",
     "\n",
     "# === Username Detection / Creation ===\n",
@@ -287,9 +287,25 @@
    },
    "outputs": [],
    "source": [
-    "command = 'smallbaselineApp.py ' + str(config_file) + ' --dostep modify_network'\n",
+    "# Formulate ifgramStack file\n",
+    "ifgramStack_file = os.path.join(mintpy_dir, 'inputs/ifgramStack.h5')\n",
+    "\n",
+    "# Modify network - base command\n",
+    "command = f\"modify_network.py {ifgramStack_file} -t {config_file}\"\n",
+    "\n",
+    "# Check whether exclusions specified in my_sites file\n",
+    "if site_info.get('ifgExcludePair') not in [None, 'auto', 'no']:\n",
+    "    command += f\" --exclude-ifg {site_info.get('ifgExcludePair')}\"\n",
+    "\n",
+    "if site_info.get('ifgExcludeDate') not in [None, 'auto', 'no']:\n",
+    "    command += f\" --exclude-date {site_info.get('ifgExcludeDate')}\"\n",
+    "\n",
+    "if site_info.get('ifgExcludeIndex') not in [None, 'auto', 'no']:\n",
+    "    command += f\" --exclude-ifg-index {site_info.get('ifgExcludeIndex')} \"\n",
+    "\n",
+    "# Run command\n",
     "process = subprocess.run(command, shell=True)\n",
-    "plot_network.main(['inputs/ifgramStack.h5'])"
+    "plot_network.main([ifgramStack_file])"
    ]
   },
   {
diff --git a/methods/transient/Transient_Requirement_Validation.ipynb b/methods/transient/Transient_Requirement_Validation.ipynb
index 66f79e4..265d87a 100644
--- a/methods/transient/Transient_Requirement_Validation.ipynb
+++ b/methods/transient/Transient_Requirement_Validation.ipynb
@@ -111,7 +111,7 @@
     "from matplotlib import pyplot as plt\n",
     "from mintpy import smallbaselineApp\n",
     "from mintpy.objects import gnss\n",
-    "from mintpy.utils import readfile, utils as ut\n",
+    "from mintpy.utils import readfile, utils as ut, network\n",
     "from mintpy.cli import view\n",
     "\n",
     "from solid_utils.sampling import load_geo, samp_pair\n",
@@ -138,13 +138,13 @@
    "outputs": [],
    "source": [
     "# === Basic Configuration ===\n",
-    "site = \"CalVal_S1_LosAngelesA64\"\n",
+    "site = \"test\"\n",
     "requirement = \"Transient\"\n",
     "dataset = 'ARIA_S1_new' # For Sentinel-1 testing with aria-tools\n",
     "aria_gunw_version = \"3_0_1\"\n",
     "\n",
-    "rundate = \"20250820\"  # Date of this Cal/Val run\n",
-    "version = \"1\"         # Version of this Cal/Val run\n",
+    "rundate = \"20250826\"  # Date of this Cal/Val run\n",
+    "version = \"1b\"         # Version of this Cal/Val run\n",
     "custom_sites = \"/home/jovyan/my_sites.txt\"  # Path to custom site metadata\n",
     "\n",
     "# === Username Detection / Creation ===\n",
@@ -278,6 +278,39 @@
     "Load the date of interferograms into Python:"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# Formulate ifgramStack file\n",
+    "ifgramStack_file = os.path.join(mintpy_dir, 'inputs/ifgramStack.h5')\n",
+    "\n",
+    "# Modify network - base command\n",
+    "command = f\"modify_network.py {ifgramStack_file} -t {config_file} \"\n",
+    "\n",
+    "# Check whether exclusions specified in my_sites file\n",
+    "if site_info.get('ifgExcludePair') not in [None, 'auto', 'no']:\n",
+    "    command += f\" --exclude-ifg {site_info.get('ifgExcludePair')}\"\n",
+    "\n",
+    "if site_info.get('ifgExcludeDate') not in [None, 'auto', 'no']:\n",
+    "    command += f\" --exclude-date {site_info.get('ifgExcludeDate')}\"\n",
+    "\n",
+    "if site_info.get('ifgExcludeIndex') not in [None, 'auto', 'no']:\n",
+    "    command += f\" --exclude-ifg-index {site_info.get('ifgExcludeIndex')} \"\n",
+    "\n",
+    "# Run command\n",
+    "process = subprocess.run(command, shell=True)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Retrieve the valid date pairs."
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -287,12 +320,12 @@
    "outputs": [],
    "source": [
     "# Retrieve available interferogram date pairs\n",
-    "ifgs_date = readfile.read(ifgs_file,datasetName='date')[0]\n",
+    "ifgs_date = network.get_date12_list(ifgs_file, dropIfgram=True)\n",
     "\n",
     "# Report all available date pairs\n",
     "print(f\"Total {len(ifgs_date)} interferograms available\")\n",
     "for pair in ifgs_date:\n",
-    "    print(f\"{pair[0].decode()}-{pair[1].decode()}\")"
+    "    print(f\"{'-'.join(pair.split('_'))}\")"
    ]
   },
   {
@@ -305,9 +338,8 @@
    "source": [
     "# Format date strings into Python datetime objects\n",
     "_ifgs_date = np.empty_like(ifgs_date, dtype=dt)\n",
-    "for i in range(ifgs_date.shape[0]):\n",
-    "    start_date = ifgs_date[i,0].decode()\n",
-    "    end_date = ifgs_date[i,1].decode()\n",
+    "for i, pair in enumerate(ifgs_date):\n",
+    "    start_date, end_date = pair.split(\"_\")\n",
     "    start_date = dt.strptime(start_date, \"%Y%m%d\")\n",
     "    end_date = dt.strptime(end_date, \"%Y%m%d\")\n",
     "    _ifgs_date[i] = [start_date, end_date]\n",
@@ -337,11 +369,11 @@
     "# Determine which interferograms to exclude based on 12-day criterion\n",
     "del_row_index = []\n",
     "for i in range(ifgs_date.shape[0]):\n",
-    "    time_interval = (ifgs_date[i,1]-ifgs_date[i,0]).days\n",
+    "    time_interval = (ifgs_date[i][1]-ifgs_date[i][0]).days\n",
     "    if time_interval != 12:\n",
     "        del_row_index.append(i)\n",
     "while i<ifgs_date.shape[0]-1:\n",
-    "    if ifgs_date[i,1]==ifgs_date[i+1,0]:\n",
+    "    if ifgs_date[i][1]==ifgs_date[i+1][0]:\n",
     "        del_row_index.append(i+1)\n",
     "        i = i+2\n",
     "    else:\n",
@@ -375,7 +407,7 @@
     "del_row_index = []\n",
     "i = 0\n",
     "while i<ifgs_date.shape[0]-1:\n",
-    "    if ifgs_date[i,1]==ifgs_date[i+1,0]:\n",
+    "    if ifgs_date[i][1]==ifgs_date[i+1][0]:\n",
     "        del_row_index.append(i+1)\n",
     "        i = i+2\n",
     "    else:\n",
@@ -867,8 +899,8 @@
     "E = W+lon_step*(width-1)\n",
     "\n",
     "# Temporal metadata\n",
-    "start_date_gnss = ifgs_date[0,0]\n",
-    "end_date_gnss = ifgs_date[-1,-1]"
+    "start_date_gnss = ifgs_date[0][0]\n",
+    "end_date_gnss = ifgs_date[-1][-1]"
    ]
   },
   {
@@ -966,8 +998,8 @@
     "    # Count number of dates in time range by looping through interferograms\n",
     "    for ifg_ndx in range(insar_displacement.shape[0]):\n",
     "        # Days in interferogram range (should be 12 based on above filtering)\n",
-    "        start_date = ifgs_date[ifg_ndx,0]\n",
-    "        end_date = ifgs_date[ifg_ndx,-1]\n",
+    "        start_date = ifgs_date[ifg_ndx][0]\n",
+    "        end_date = ifgs_date[ifg_ndx][-1]\n",
     "        range_days = (end_date - start_date).days\n",
     "\n",
     "        # Count number of GNSS epochs in IFG date range\n",
@@ -1203,7 +1235,7 @@
     "    img1 = ax.imshow(insar_displacement[ifg_ndx],\n",
     "                     cmap=cmap_obj, vmin=vmin, vmax=vmax, interpolation='nearest',\n",
     "                     extent=(W, E, S, N))\n",
-    "    ax.set_title(f\"{ifgs_date[ifg_ndx,0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx,1].strftime('%Y%m%d')}\")\n",
+    "    ax.set_title(f\"{ifgs_date[ifg_ndx][0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx][1].strftime('%Y%m%d')}\")\n",
     "    cbar1 = fig.colorbar(img1, ax=ax, orientation='horizontal')\n",
     "    cbar1.set_label('LOS displacement [mm]')\n",
     "\n",
@@ -1333,8 +1365,8 @@
     "site_loc = sitedata['sites'][site]['calval_location']\n",
     "for ifg_ndx in displacement.index.get_level_values(0).unique():\n",
     "    # Start and end dates as strings\n",
-    "    start_date = ifgs_date[ifg_ndx,0].strftime('%Y%m%d')\n",
-    "    end_date = ifgs_date[ifg_ndx,1].strftime('%Y%m%d')\n",
+    "    start_date = ifgs_date[ifg_ndx][0].strftime('%Y%m%d')\n",
+    "    end_date = ifgs_date[ifg_ndx][1].strftime('%Y%m%d')\n",
     "\n",
     "    # Validation figure and assessment\n",
     "    _, validation_fig_method1 = display_transient_validation(ddiff_dist[ifg_ndx], abs_ddiff_disp[ifg_ndx],\n",
@@ -1486,7 +1518,7 @@
     "\n",
     "index = []\n",
     "for i in range(len(ifgs_date_ap1)):\n",
-    "    index.append(ifgs_date_ap1[i,0].strftime('%Y%m%d')+'-'+ifgs_date_ap1[i,1].strftime('%Y%m%d'))\n",
+    "    index.append(ifgs_date_ap1[i][0].strftime('%Y%m%d')+'-'+ifgs_date_ap1[i][1].strftime('%Y%m%d'))\n",
     "\n",
     "n_all_pd = pd.DataFrame(n_all,columns=columns,index=index)\n",
     "n_pass_pd = pd.DataFrame(n_pass,columns=columns,index=index)\n",
@@ -1729,7 +1761,7 @@
     "    fig, ax = plt.subplots(figsize=[18, 5.5])\n",
     "    img1 = ax.imshow(insar_coherence[ifg_ndx], cmap=cmap_obj, interpolation='nearest', extent=(W, E, S, N))\n",
     "    ax.set_title(f\"Coherence \"\n",
-    "                 f\"\\n Date range {ifgs_date[ifg_ndx,0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx,1].strftime('%Y%m%d')}\")\n",
+    "                 f\"\\n Date range {ifgs_date[ifg_ndx][0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx][1].strftime('%Y%m%d')}\")\n",
     "    cbar1 = fig.colorbar(img1, ax=ax)\n",
     "    cbar1.set_label('coherence')"
    ]
@@ -1748,7 +1780,7 @@
     "    fig, ax = plt.subplots(figsize=[18, 5.5])\n",
     "    img1 = ax.imshow(insar_displacement[ifg_ndx], cmap=cmap_obj, interpolation='nearest', extent=(W, E, S, N))\n",
     "    ax.set_title(f\"Interferogram \"\n",
-    "                 f\"\\n Date range {ifgs_date[i,0].strftime('%Y%m%d')}-{ifgs_date[i,1].strftime('%Y%m%d')}\")\n",
+    "                 f\"\\n Date range {ifgs_date[i][0].strftime('%Y%m%d')}-{ifgs_date[i][1].strftime('%Y%m%d')}\")\n",
     "    cbar1 = fig.colorbar(img1, ax=ax)\n",
     "    cbar1.set_label('LOS displacement [mm]')"
    ]
@@ -1821,7 +1853,7 @@
     "    fig, ax = plt.subplots(figsize=[18, 5.5])\n",
     "    img1 = ax.hist(dist[ifg_ndx], bins=100)\n",
     "    ax.set_title(f\"Histogram of distance \"\n",
-    "                 f\"\\n Date range {ifgs_date[ifg_ndx,0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx,1].strftime('%Y%m%d')}\")\n",
+    "                 f\"\\n Date range {ifgs_date[ifg_ndx][0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx][1].strftime('%Y%m%d')}\")\n",
     "    ax.set_xlabel(r'Distance ($km$)')\n",
     "    ax.set_ylabel('Frequency')\n",
     "    ax.set_xlim(0, 50)"
@@ -1840,7 +1872,7 @@
     "    fig, ax = plt.subplots(figsize=[18, 5.5])\n",
     "    img1 = ax.hist(rel_measure[ifg_ndx], bins=100)\n",
     "    ax.set_title(f\"Histogram of Relative Measurement \"\n",
-    "                 f\"\\n Date range {ifgs_date[ifg_ndx,0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx,1].strftime('%Y%m%d')}\")\n",
+    "                 f\"\\n Date range {ifgs_date[ifg_ndx][0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx][1].strftime('%Y%m%d')}\")\n",
     "    ax.set_xlabel(r'Relative Measurement ($mm$)')\n",
     "    ax.set_ylabel('Frequency')"
    ]
@@ -1963,8 +1995,8 @@
     "method2_validation_figs = []\n",
     "for ifg_ndx in displacement.index.get_level_values(0).unique():\n",
     "    # Start and end dates as strings\n",
-    "    start_date = ifgs_date[ifg_ndx,0].strftime('%Y%m%d')\n",
-    "    end_date = ifgs_date[ifg_ndx,1].strftime('%Y%m%d')\n",
+    "    start_date = ifgs_date[ifg_ndx][0].strftime('%Y%m%d')\n",
+    "    end_date = ifgs_date[ifg_ndx][1].strftime('%Y%m%d')\n",
     "\n",
     "    # Validation figure and assessment\n",
     "    _, validation_fig_method2 = display_transient_validation(dist[ifg_ndx], rel_measure[ifg_ndx],\n",
@@ -2017,7 +2049,7 @@
     "\n",
     "index = []\n",
     "for i in range(len(ifgs_date)):\n",
-    "    index.append(f\"{ifgs_date[i,0].strftime('%Y%m%d')}-{ifgs_date[i,1].strftime('%Y%m%d')}\")\n",
+    "    index.append(f\"{ifgs_date[i][0].strftime('%Y%m%d')}-{ifgs_date[i][1].strftime('%Y%m%d')}\")\n",
     "\n",
     "n_all_pd = pd.DataFrame(n_all, columns=columns, index=index)\n",
     "n_pass_pd = pd.DataFrame(n_pass, columns=columns, index=index)\n",
@@ -2196,7 +2228,7 @@
     "    # Format figure\n",
     "    plt.legend(loc='upper right')\n",
     "    plt.title(f\"Displacements \"\n",
-    "              f\"\\n Date range {ifgs_date[ifg_ndx,0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx,1].strftime('%Y%m%d')} \"\n",
+    "              f\"\\n Date range {ifgs_date[ifg_ndx][0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx][1].strftime('%Y%m%d')} \"\n",
     "              f\"\\n Number of station pairs used: {len(insar_disp[ifg_ndx])}\")\n",
     "    plt.xlabel('LOS Displacement (mm)')\n",
     "    plt.ylabel('Number of Station Pairs')\n",
@@ -2220,7 +2252,7 @@
     "    # Format figure\n",
     "    plt.legend(loc='upper right')\n",
     "    plt.title(f\"Residuals\"\n",
-    "              f\"\\n Date range {ifgs_date[ifg_ndx,0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx,1].strftime('%Y%m%d')}\"\n",
+    "              f\"\\n Date range {ifgs_date[ifg_ndx][0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx][1].strftime('%Y%m%d')}\"\n",
     "              f\"\\n Number of stations pairs used: {len(ddiff_disp[i])}\")\n",
     "    plt.xlabel('Displacement Residual (mm)')\n",
     "    plt.ylabel('N Stations')\n",
@@ -2250,7 +2282,7 @@
     "    plt.xlabel(\"Distance (km)\")\n",
     "    plt.ylabel(\"Amplitude of Displacement Residuals (mm)\")\n",
     "    plt.title(f\"Residuals \"\n",
-    "              f\"\\n Date range {ifgs_date[ifg_ndx,0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx,1].strftime('%Y%m%d')} \"\n",
+    "              f\"\\n Date range {ifgs_date[ifg_ndx][0].strftime('%Y%m%d')}-{ifgs_date[ifg_ndx][1].strftime('%Y%m%d')} \"\n",
     "              f\"\\n Number of stations pairs used: {len(ddiff_dist[ifg_ndx])}\")\n",
     "    plt.legend([\"Measurement\", \"Mission Reqiurement\"])\n",
     "    plt.show()"
@@ -2278,8 +2310,8 @@
     "# Loop through interferograms\n",
     "for ifg_ndx in range(insar_displacement.shape[0]):\n",
     "    # Define start and end dates\n",
-    "    start_time_str = ifgs_date[ifg_ndx,0].strftime('%Y%m%d')\n",
-    "    end_time_str = ifgs_date[ifg_ndx,1].strftime('%Y%m%d')\n",
+    "    start_time_str = ifgs_date[ifg_ndx][0].strftime('%Y%m%d')\n",
+    "    end_time_str = ifgs_date[ifg_ndx][1].strftime('%Y%m%d')\n",
     "\n",
     "    # Loop through stations in IFG\n",
     "    for site_name in gnss_time_series[ifg_ndx].columns:\n",
@@ -2292,7 +2324,7 @@
     "        plt.figure(figsize=(15,5))\n",
     "\n",
     "        # Plot time-series data\n",
-    "        plt.scatter(pd.date_range(start=ifgs_date[ifg_ndx,0], end=ifgs_date[ifg_ndx,1]),series)\n",
+    "        plt.scatter(pd.date_range(start=ifgs_date[ifg_ndx][0], end=ifgs_date[ifg_ndx][1]),series)\n",
     "\n",
     "        # Foramt figure\n",
     "        plt.title(f\"station name: {site_name}\")\n",
diff --git a/prep/ARIA_prep.ipynb b/prep/ARIA_prep.ipynb
index a085736..c38280f 100644
--- a/prep/ARIA_prep.ipynb
+++ b/prep/ARIA_prep.ipynb
@@ -95,12 +95,12 @@
    "source": [
     "# === Basic Configuration ===\n",
     "site = \"test\"  # Cal/Val location ID\n",
-    "requirement = \"Secular\"  # Options: 'Secular', 'Coseismic', 'Transient'\n",
+    "requirement = \"Coseismic\"  # Options: 'Secular', 'Coseismic', 'Transient'\n",
     "dataset = \"ARIA_S1_new\"  # Dataset type: 'ARIA_S1', 'ARIA_S1_new'\n",
     "aria_gunw_version = \"3_0_1\"\n",
     "\n",
     "rundate = \"20250826\"  # Date of this Cal/Val run\n",
-    "version = \"1\"         # Version of this Cal/Val run\n",
+    "version = \"1b\"         # Version of this Cal/Val run\n",
     "custom_sites = \"/home/jovyan/my_sites.txt\"  # Path to custom site metadata\n",
     "\n",
     "# === Username Detection / Creation ===\n",
@@ -512,9 +512,6 @@
     "    \"mintpy.velocity.startDate\": site_info.get('download_start_date'),\n",
     "    \"mintpy.velocity.endDate\": site_info.get('download_end_date'),\n",
     "    \"mintpy.reference.lalo\": site_info.get('reference_lalo'),\n",
-    "    \"mintpy.network.excludeDate12\": site_info.get('ifgExcludePair'),\n",
-    "    \"mintpy.network.excludeDate\" : site_info.get('ifgExcludeDate'),\n",
-    "    \"mintpy.network.excludeIfgIndex\" : site_info.get('ifgExcludeIndex'),\n",
     "}\n",
     "\n",
     "# Write config dictionary to text file\n",