Switch from direct-to-offsite to onsite>offsite backups

I am using the Web GUI. I setup a couple machines to backup directly to encrypted B2 storage. Now I instead want to run hourly jobs to my Synology, then have these backed up (or copyed) on a less frequent interval from the Syno to that same B2 storage destination. I don’t think I chose copy-compatible when I initially configured (way to check?).

Is it possible for me to avoid re-uploading this data and to retain all the deduplication goodness on B2? If so, how should I set that up?

So the datastore on synology was just created? Nuke it, and create it as copy-compatible with B2. Then copy from B2. (to avoid egress fee use cloudflare integration)

Then configure your backup to synology and on synology run another instance of duplicacy to do copy to B2.

I have the copy going now. Thanks.