IFR Flight Plans and ATC Clearance

When I create flightplans now which are IFR & then press fly now. I do not get invited to ask for IFR Clearnace, I go staright to Taxi out. I have added a few third party Airports and also sorted out the gates at some and Ai at other Airports. Could I have deleted corrupted something which means I cannot fly an IFR Flight Plan that I have created myself. I get IFR if I use one of the 2002 adventures.Thank you in advance if you can helpTerry