Using help strings in MLLE permanently makes a .j2l MLLE only, even if every text string is removed after and the .j2l is brought back to a vanilla state

[FawFuLJJ2]

Trying to make an example level and found out that you can disable layer properties, plus texture modes to restore to .j2l. But once I even touched the help strings once it permanently stays in a MLLE level enveloppe damaged state, even if i remove all of the text strings again. I can't open the level ever again with TSFJCS.exe.

[Violet-CLM]

Unlikely. What usually gets me is the "Copy Layer4" button, since that usually changes a layer's rotationAngle/rotationRadiusMultiplier properties.