@GeraldKo:
When you use 'install' in the GVM control panel it copies the file from its [SD card or elsewhere] original location into the .gvm/* image file.

It's unfortunate that GVM can't read or write (in particular the latter, as at least the GVM control can read) from/to SD cards. This is IMO the real big issue with GVM - you get data _in_, but not _out_.. it's strange that Access didn't include support for that.