Thanks Paul for looking into this.  Bummer that FSX/P3D don't have that move aircraft ability built-in.  However based upon your suggestion, I tried this and it did indeed keep it to one load time:
 
	 
 
            //set the time
            FSUIPCConnection.UTCDateTime = new DateTime(2018, 12, 25, 10, 0, 0);
            
            //Set the parameters for moving the plane
            // Set the OnGround flag
            bool onGround = false;
            // Set the heading (in degrees TRUE)
            double? heading = oPos.Heading_True;
            // IAS and Altitude set to null as we've set the OnGround flag
            double? ias = (int)oPos.Airspeed_IAS;
            FsAltitude? altitude = FsAltitude.FromFeet(oPos.Altitude);
            // Set level plane on the ground
            double? pitch = 4.21;
            double? bank = 0;
            // Call the method
            FSUIPCConnection.MoveAircraft(newPos, onGround, altitude, heading, pitch, bank, ias, true);
	 
 
	I'll have to write a convertor to get the move-to airport date/time into UTC, but that appears to be relatively trivial once you use the .NET TimeZoneInfo class.  I did have P3D lock up once right after the call and eventually crash so I'll need to test this a bunch to make sure that it will be reliable.  But at least this does save another scenery load.
 
	Thanks!