Yes I'm very familiar with how it works. Looong time MPX user.
When I said model memory it's the whole TX.
I can go to my older computer backup and install the files then I will see the file in the folder and in folder via the launcher, but when I save a memory from the TX I can only see them via the launcher and therefore not save them in another place for backup.
Update. If I completely remove the launcher from computer and reinstall it the files in the launcher dataset folder is still there.