Had a weird thing happen; fortunately I had a backup, but...
I have my DrivePool set to x3 on most folders, except the following which are set at x1.
Recycle Bin
OneDrive
Backblaze temp folder (online backup)
I had several videos in the MKV container format that I demuxed and remuxed into the MP4 container using dBpoweramp Video converter, with the option set to delete to the recycle bin on completion. Problem was, I also had dBpoweramo Video converter to split to two video sections after 4GB, so I recovered the original MKV files from the Recycle Bin.