don't think so, so just in case i made a backup of every deleted post alongside their metadata a few days before the engine change
Also a backup of the metadata of all the posts on the site
If you want it or just want a post you forgot to back up, just HMU on discord: Mattlau04#0009
edit: just to be clear since there seems to be some confusion, i only have deleted posts up to 27/03/2022, and will (probably) not be able to get newer deleted posts
other edit: well for now an archive of the old hub exists at
old.hypnohub.net, so you can just use that instead (use the tag deleted:true or deleted:all)