Hi there,
I think there is a bug in the LP_XMLConverter tool for ArchiCAD version 22.
IF you put a normal text in one of the 16 layers of a GSM file, and convert it to XML, you will be unable to convert it back to GSM, cause the the tool will generate an error message that it cannot identify the associated font that was used.
I also checked for the installed fonts on my PC and it was there.
A good friend of mine have once told me that I´m so brute that I´m capable of creating a GDL script capable of creating GDLs.