When I drag a project from Mac to Windows and open it in Scrivener, it has no front or back matter assigned. It seems to happen because I’ve selected and locked “Print” as the target in Scrivener 3 Mac, and the beta doesn’t support that.
When I select specific compile group dependent front & back matter, it compiles.
I’m not talking a bout a compile format called “Print” or anything like that. Locks apply to every compile, not a specific compile. The Beta does not support the Print lock, which your comment seems to confirm.
At the Dropbox link is a video showing what Print and eBook locks do on the Mac. It means I have to lock only once, no matter how many Compile Groups I’ll use in the project.
Your message is quite specific to your project and would be impossible to decipher without your video. Thanks for the video.
The behavior that you describe was fixed some versions ago. The Front/Back matter contents will auto-adjust itself based on the “compile book(folder)” you select in the “Compile:” box at the top. Give it another try and upload a Windows video of the broken behavior, if still present.