Do you get it all back by going back to a different version in revision control?
Yes, if you had the revision Control enable you can go back to a specific version that you believe that you had all of your Asset located Everything should be there, it gives you a list of assets you add to that version.
Make sure that you read document that Fortnite has for the revision control. The revision Control always need to be sync to latest version to be able to edit. If you not in Latest, you can cause a conflict.
Unreal Revision Control | Epic Developer Community (epicgames.com)
Conflicts in Unreal Revision Control | Epic Developer Community (epicgames.com)
Unreal Revision Control Command Line Interface | Epic Developer Community (epicgames.com)
[Restoring Backups in Unreal Engine Fortnite - YouTube] (https://www.youtube.com/watch?v=1RIhrg6DgKo&t=265s) This video gives a guide of Control command line.
you closed everything off, then removed the referenced folder and restarted the pc, right?
correct.
So, when you then opened your project, the error is gone right?
yes, the main problem is Fab reference file goes into state of in-use or read only file. which locks folder and any asset save in the folder, So The revision control cannot write too. I saw this in my PowerShell.
if you re-add Fab file you will continue with same error, my suggestion is for you to stay away from any Fab file to Epic fix it. I haven’t figure way around it. I will do some test in new project to figure out a way around It my project relies on them.
“Update one of my projects however, which has fab content, i am scared to go and that i will encouter the same error.”
Yes, you will encounter this error, it happens to me: expressionless:
Just follow My previous Comment this YouTube video give a guide how to restore to previous version of revision Control Which part of documentation of Epic Control command line interface.