if i would face the same issue , i would go to implement new replica VM rather than troubleshooting it
I think this is a replication issue between two Connection Servers in Horizon View.
The question is whether I can uninstall/install on vdiconn02 as per VMware Knowledge Base or if I have to do both Connection Servers.
I'm not sure how a replica VM fits into this or do you mean a new Connection Server like a vdiconn03 ?
First follow the steps in Restart order of the View environment to clear ADLDS (ADAM) synchronization in Horizon View (2068381) to see if that resolved the replication issue.
If not I would follow the resolution in Replicating VMware Horizon View Connection server fails with the error: Insufficient attributes were given to create an object (2091974) on vdiconn02 to completely remove it. Then perform a fresh install of the same version of Horizon Connection Server on vdiconn02 and make it a replica of vdiconn01.