When using standalone replication between two brokers, there will be replication errors if messages are put onto the primary queue before replication is set up.
Create queue "q" on brokers P and B.
Put messages 1,2,3 on P.q
Start replication from P.q to B.q
Put messages 4,5,6 o P.q
Fetch and acknowledged one message from P.q
Fetch all messages from B.q. Instead of the expected messages [1,2,3,4,5], q has [0,1,3,4,5]