[SR-Users] Dialog: dlg_var and multi-branch call

Hi All, Just curious to ask as how to save $dlg_var for a multi-leg/branched call. When I call a subscriber with multiple Contacts, and one branch answer while rest are CANCEL'd from that point onward I've seen that the dialog and its variables disappear from Kamailio memory and DB.Is this how its intended to be ? Here are the relevant debug line: DEBUG: dialog [dlg_hash.c:1266]: next_state_dlg(): dialog 0x7f7c1461e2e8 changed from state 2 to state 5, due event 4 (ref 2) DEBUG: dialog [dlg_handlers.c:574]: dlg_onreply(): dialog 0x7f7c1461e2e8 failed (negative reply) DEBUG: dialog [dlg_cb.c:271]: run_dlg_callbacks(): dialog=0x7f7c1461e2e8, type=4 DEBUG: dialog [dlg_handlers.c:1050]: dlg_set_tm_waitack(): registering TMCB to wait for negative ACK Best Regard, Sammy