Hello,
This bug pops up randomly from project to project.
When I reopen a project, all of the undo history is gone, even though my preferences are set to retain the undo history.
In package contents, there are many "undodata.nosync" files. I'm not quite sure how those files work - but to me, it seems like the information is there, but it's just not showing up in the LogicX window.
I am using the newest version of LogicX.
As I type, I am upgrading my software to Big Sur.
Right now, I am desperate to access this undo history (a bunch of files moved wildly out of place, and a whole take folder was deleted after I spent many hours comping).
PS - I have a similar problem with project backups. My backups are set to 100, but Logic only ever saves one backup.