I pushed a better fix that makes use of UID.
This editor is a bit special, because the Resource is generated on save, not actually being edited.

The saving should now work properly for any BusLayout, but the path label is not updating when the file is renamed. It can be fixed separately, as not sure how to do it properly.

The PR fixes the issue when the file is moved inside the editor. If moved from outside it still happens, but I assume that can't be avoided.

but the path label is not updating when the file is renamed. It can be fixed separately, as not sure how to do it properly.

FileSystemDock has the files_moved signal, couldn't that be used?

FileSystemDock has the files_moved signal, couldn't that be used?

Yeah, that worked.

The PR fixes the issue when the file is moved inside the editor. If moved from outside it still happens, but I assume that can't be avoided.

That's a separate bug. Moving a file externally does not update the UID's path immediately.

That fixed the renaming, but now the original bug is back.

I did quite a bit more changes and it should be working now. Also fixed a couple additional problems with UIDs and path label.

That fixed the renaming, but now the original bug is back.

It wasn't back, there was a case I missed.

Thanks!