Backup snapshot deleted from destination freenas


We are using freenas 11.1 for data and replication. I have created zvol on source and replication start on destination freenas. Every thing is working fine. But when I deleted the source zvol with snapshot. Because We can’t delete zvol without snapshot, the destination freenas replicated snapshot also deleted.

I don’t want to delete the destination snapshot from destination freenas.

Please help me on this issue