Ok, I’ll migrate the project. It’s not a problem with the folder permissions, I just checked, there are no read-only files. And I also don’t have older versions of Unreal running. So I sure broke something by force deleting some file or folder.
I’ll let you know how it turned out. I hope, to be able to migrate and that everything remains just as ordered. Once I tried to migrate and the files were in completely random folders. And that made me abandon migration. I have all my files perfectly organized and it would be a daunting job to have to organize them again.
Thank you so much for your help. I am very grateful!! 