Saving FS2004 flights with failures armed

Hi all !Does anyone know how you can save a flight in FS2004 with a failure armed ? I've tried it and when the saved flight is loaded again, the failure has been cancelled. It appears that there is no information saved in the .FLT file about the failure (which would explain it) yet the Learning Centre in FS2004 specifically mentions that you can save flights with failures armed to practice, for example, engine failure on take-off, which is what I'm trying to do...Is this an oversight by Microsoft or is there extra info that can be added to the .FLT file to allow the armed failure to stay live in the reloaded flight?Any ideas gratefully received!