Completed Workflows not replicating in multi-cluster set-up when one of cluster is Rebuilt

We have a current set-up of Multi Cluster temporal with XDC replication enabled. We have a situation where we need to rebuild both the clusters. We have all namespaces active in one cluster and rebuilding the other one, however after building the cluster succesfully, we are unable to replicate the completed workflows from primary to secondary. We need to replicate the completed workflows also due to our internal customers need completed workflows as well for various reasons. Please could you let us know how is this achievable?

We are currently on temporal server version 1.21.5