Signing in with the same MSA account on two devices

[SyntaxC4]

There seems to be an issue if you sign in to a different device using a preexisting MSA account which is already known to the system.

Reproduction Steps

1. Login to the Android Application from Phone 1.
2. Submit a Claim
3. Login to the Android Application from Phone 2.
4. Application Crashes saying it cannot access the Vehicles

Exception from Hockey App

Xamarin caused by: android.runtime.JavaProxyThrowable: Newtonsoft.Json.JsonReaderException: Could not convert string to DateTimeOffset: 22/11/2016 03:04:29 +01:00. Path 'lastModified'.
at Newtonsoft.Json.JsonReader.ReadDateTimeOffsetString (System.String s) [0x00093] in <2781d1b198634655944cdefb18b3309b>:0
at Newtonsoft.Json.JsonReader.ReadAsDateTimeOffset () [0x00079] in <2781d1b198634655944cdefb18b3309b>:0
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.ReadForType (Newtonsoft.Json.JsonReader reader, Newtonsoft.Json.Serialization.JsonContract contract, System.Boolean hasConverter) [0x00089] in <2781d1b198634655944cdefb18b3309b>:0
at Newtonsoft.Json.Serialization.JsonSerializerInternalReader.PopulateObject (System.Object newObject, Newtonsoft.Json.JsonReader reader, Newtonsoft.Json.Serialization.JsonObjectContract contract, Newtonsoft.Json.Serialization.JsonProperty member, System.String id) [0x001f2] in <2781d1b198634655944cdefb18b3309b>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in :0
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0004e] in :0
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in :0
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in :0
at System.Runtime.CompilerServices.TaskAwaiter`1[TResult].GetResult () [0x00000] in :0
at Microsoft.WindowsAzure.MobileServices.Files.MobileServiceFileSyncContext+d__14.MoveNext () [0x00191] in :0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in :0
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess (System.Threading.Tasks.Task task) [0x0004e] in :0
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification (System.Threading.Tasks.Task task) [0x0002e] in :0
at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd (System.Threading.Tasks.Task task) [0x0000b] in :0
at System.Runtime.CompilerServices.TaskAwaiter.GetResult () [0x00000] in :0
at ContosoInsurance.CustomFileSyncTrigger+d__9.MoveNext () [0x000fd] in <4a6e57e4a82b414f955b211e534080da>:0
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in :0
at System.Runtime.CompilerServices.AsyncMethodBuilderCore.m__1 (System.Object state) [0x00000] in :0
at System.Threading.QueueUserWorkItemCallback.WaitCallback_Context (System.Object state) [0x0000e] in :0
at System.Threading.ExecutionContext.RunInternal (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x0008d] in :0
at System.Threading.ExecutionContext.Run (System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, System.Object state, System.Boolean preserveSyncCtx) [0x00000] in :0
at System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem () [0x0002a] in :0
at System.Threading.ThreadPoolWorkQueue.Dispatch () [0x00096] in :0
at System.Threading._ThreadPoolWaitCallback.PerformWaitCallback () [0x00000] in :0