New callsign- "Army Army?"

As delivered (i.e. as purchased and downloaded a few weeks ago) the MAAM-SIM C47 "Delivery Condition" callsign for ATC is "Army Army." :( Since this is weird beyond belief, I edited the aircraft.cfg file to show atc_airline=Army and atc_flight_number=388 (since the aircraft number is 118388 and ATC typically shortens all registration-based and military number-based callsigns to the last 3 digits.)Unbelievably (for me at least) it worked! No more "Army Army is cleared to the Cairo airport as filed...." :( The reason for posting this here is to help any others who may also be irritated by the original insane (and redundant, not to mention ambiguous!) callsign of this aircraft.