Just use the 55101 as the flight#.
(MFC is already inferred by the system when MFC - Misty Flying Club in the Select Airline is selected).
ICAO = JOSE - MLLR
show pirep should be:
Select Airline - MFC - Misty Flying Club
Enter Flight Number: 55101
Select Departure Airport: JOSE
Select Arrival Airport: MLLR
Aircraft - (Whatever you used)
Fuel used - .1
Flight Time - .1
Route: (Anything here).
Then File Flight Report, and it should complete which will complete bid= JOSE - MLLR and then next leg should generate starting at MLLR.