Sorry Martin but that not really correct.
IFPS will do one of the following:
-Remove the SID/STAR designator in the original FPL if stated and leave only the Waypoint or navaid like for example in the UK (this of course by request of the british authorities)
-Insert a valid SID/STAR designator if none or an incorrect one is stated in the original FPL like for example in Germany or Ireland (this of course by request of the concerned States)
-Accept DCT before/after the firt/last item of the route if no SID/STAR is published for the aerodrome and the maximum aerodrome DCT limit allows for this DCT, like for example in some French airfields, which is usually 50NM.
-If no SID/STAR is published and when the max DCT limit for the aerodrome is 0NM force you to flight plan VFR in that portion, like for example in Italy.
rgds