In dmq_usrloc, a ucontact_t with FL_RPL flag will not send it's modify to other kamailio.

For example, I have one edge and three kamailio(for register, name A B C). And First SIP REGISTER send to edge, and edge forward to register kamailio A, then kamailio B & C have FL_RPL flag, kamailio A do not have FL_RPL flag.
In this situation,  If kamailio A is crash, the second SIP REGISTER(same call-id and tag) forward to kamailio B, kamailio B will not replicate reg info to C, because kamailio B have FL_RPL flag.

What is the suggestion in this case?
Thanks