Different admin4.nsf and event4.nsf replicas in a cluster?

I have a couple of servers in a Domino cluster which I inherited when I took my current role, and I have just notices that the admin4.nsf and event4.nsf databases are not replicated between the two servers - one server has replicas with the right IDs (per http://www-01.ibm.com/support/docview.wss?uid=swg21099635) but the other server has completely different replicas.

Anyone know if I can safely replicated the correct ones over the top of the incorrect ones?

I guess it explains why admin requests on one server have been having problems...