I was enjoyed to test this new great feature so expected : the possibility to replicate a source "catalyst" repository to an target "catalyst" repository.
However, i am very surprised , indeed we backup all of our VMs on "landing zones" -> 1 week of retention (primary backup on 10k fast disk, 2k16 reFS volumes),
then we use this backup source in our copy jobs to send them to our storeonce. (Catalyst)
I just understand that I cannot exploit this feature (catalyst copy / replication) in my current backup strategy; it works only from backup job (not copy job)
It's a pity because the "copy job" has a vocation to be used for archiving (often with GFS) in general.
If I change the target on my backup jobs, and send them directly to my storeonce, my "primary" backup times will be much much slower (no reFS on storeonce

I hope that Veeam will allow us one day to be able to use "catalyst copy/replication" with total agnostism about where the repository came from, backup or copy job.