Config Sync in High-Avalaible

I have two ltm 1600 configured active / standby and there is 10.2.4 release form with arm on both I configured the protocol ospf on both LTM 1600, the design solution requires that the two machines are configured as load-balancer unit id1 active and id2 unit load balancer standby. This for Failover. I realized that running the config sync from the active to the standby unit, synchronization occurs. But it happens that creates a misalignment in the ospf routing protocol in lb standby unit becomes the standby unit id1, id2 unit instead. I was forced to disable the function, but the customer wants it to be implemented as LTM 1500 lb on the feature is enabled. How do I find a feature, maybe even automatic sync only the virtual-server and pool, and go to create mismatches in the routing set? Who can help me? thanks Gianluca