Moving installation, soundfonts not applied

I’ve recently moved laptops, from Windows to Linux.

On Windows, I used MuseScore 4 portable. I made sure to back up my “MuseScore4Development” folder from Documents. I don’t have access to this computer anymore, but I have the folders for “Scores”, “SoundFonts”, “Plugins”, “VST3”, etc.

On Linux, I have a close-to-latest AppImage. I ran MuseScore once to create the “MuseScore4” folder in Documents, then I moved my backup there.

Now when I open one of those projects, the sounds for each instrument have been reset to the defaults. I expected them to remember the relative paths to the SoundFonts and VST3 folders, but I guess that’s not supported.

I’m wondering if I can edit a .mscz file directly to recognise the new folder layout or something. I don’t want to change every instrument manually because I have a lot of projects, and some of them have specific VST settings applied, etc.

Would that be possible? Surely the paths are stored somewhere.