I tried that, but it didn't work.If it talks about things being deleted, save and close the item then reopen it. There is a table somewhere that's not updating properly.
I tried, but it says the uploaded file is too large.Can you upload the part here, or try a new part and try to extrude cut?
Was the error "attempt to delete record marked as deleted"? If so that's a very old bug. And usually the solution is to simply close the file and reopen it. Sometimes though - as in your case - it just doesn't work. It's annoying.... or another error, something about causing something to be deleted.