Wengier,
Xy3 directory commands executed inside vdos-lfn are displaying files with extensions they don't have.
For example, I have with files created with Notabene and xy3 in the same directory. The NB files have a .nb extension. The xywrite files have no extensions. But when I run the xywrite directory command, some of the recently created xy3 files are appearing with the .nb extension. When I shell to DOS in vdos-lfn, the directory contents are displayed correctly. This directory anomaly does not occur in vdosxy3.
Anyway, something to look out for....