I couldn’t find a specific answer to this. Duplicati is just NOT working for me, it will NOT restore. And I need to get those files off of Google Drive before my 2TB plan runs out. I’ve been seeing good things about Duplicacy, and I figured, maybe, name wise, there might be some interoperability in terms of restoration of backups… I’m hoping and praying in this case that it is.
No, they are not compatible in any way.
If you want to perserve the version history your best bet is to restore data with Duplicati and backup it with duplicacy.
Or keep duplicati backup intact, and start a new backup with duplicacy.