If a received MTI is not a member of the set of known and parsed MTIs, reply with an Optional Interaction Rejected with the proper message contents. Note that this is not the same as sending OIR when an unhandled but proper MTI is received; that's for future work.
Also fixes a case where the alias would not be reacquired when a conflict recurs.
If a received MTI is not a member of the set of known and parsed MTIs, reply with an Optional Interaction Rejected with the proper message contents. Note that this is not the same as sending OIR when an unhandled but proper MTI is received; that's for future work.
Also fixes a case where the alias would not be reacquired when a conflict recurs.