@alyholland welcome to the KNIME forum - on backup and recovery I can offer these things. KNIME (desktop) unlike the KNIME Business Hub (server) does not have an undelete function or trash bin. So when you delete something you will have to rely on your system to restore the file if necessary. There were ideas about introducing such a function to the desktop but they are not there yet. If the workflow is absolutely essential you should stop all activities on the system immediately and seek professional help.