Don’t count on Backblaze to back it up anymore either. They don’t backup Dropbox directories or other cloud sync products. It wasn’t broadly communicated just a line item in release notes.

I’ve now decided to move on from BB. They changed that without notice or workaround and my files (which I pay for long term versioning) are gone from their backups too.

If anything I would have expected my files to be retained, no new syncing of the directories. Not simply disappear (which could be because it appears deleted if the client is skipping them) - even then though my long term versions should take over.