In INAP it is not possible to allow roaming triggers enabled.. unless both the networks are of same type ie., having same branded switches and same operators.
Even though if u want to get the (profile) information (from HLR) to you system for each subscriber you should query the HLR with an update location Map queary and be shure that you cancel the query with out commiting (Commiting = sending update location end) at the last.