Hi Alexander,
I opened post specific for this issue.
It was part of another issue ( 4542 -Gml SourceDriverOptions -RestoreSchema - Free Support Forum - aspose.com), so separated it.
There are two option for the output…...gdbtablex not only as .gdb. · Issue #66279 · qgis/QGIS...also .gdbtable .gdbtablex not only as .gdb. · Issue #66279 · qgis/QGIS...