Yes, I have a suspicion about that as well. But not managed to set up a test that produces the error.
Strange, because the list folder is where the indirection blocks are stored. If these are missing, then the full download will start.
But since they are missing in the “orig” that should make problems with recreates from the original data?
Unless… they are added in error to the “new” such that the restore looks for extra stuff that it does not need? I know that the recreate algorithm is blindly following the data, causing it to fail when it rebuilds the database.
I have started the rewrite, of the algorithm, but I need a day or two with nothing to do before I can complete it.