Some AI Flights Missing In Action...

I've been working on a massive AI project for quite some time. Mostly Asia so far. But one place I've really been concentrating on has been Hong Kong. Still have a few airlines to go, I start with an airline and work on all its flights before moving to another. Using a program known as Yroute. I save the flights after entering them all, then go to TTools to compile them all into FS. But then I've noticed something wrong with a couple flights in particular.
I began working on a couple cargo airlines that fly to HKG. Air Hong Kong (all accounted for) Cathay Pacific (all accounted for) Then came the Air France 747-400F and a KLM 747-400F. 1 flight each, neither are ever seen at HKG even when they are to be departing back to CDG and AMS. I double checked all the info I put into Yroute, even redid them, recompiled, yet still wont show themselves at HKG. I've went to both CDG and AMS and watched them depart there, so the flights really exist and are saying they are departing for VHHH. Yet even at the scheduled departure time from HKG they are not there, anywhere
I've seen my AI at every place there supposed to be except these 2 flights. Makes no sense...what could be causing this...theres plenty of spaces on the cargo ramps, I've even tried designating spots, but never got them to be there. Any other flights I put in show up and depart and arrive exactly as scheduled without a problem :-/
I began working on a couple cargo airlines that fly to HKG. Air Hong Kong (all accounted for) Cathay Pacific (all accounted for) Then came the Air France 747-400F and a KLM 747-400F. 1 flight each, neither are ever seen at HKG even when they are to be departing back to CDG and AMS. I double checked all the info I put into Yroute, even redid them, recompiled, yet still wont show themselves at HKG. I've went to both CDG and AMS and watched them depart there, so the flights really exist and are saying they are departing for VHHH. Yet even at the scheduled departure time from HKG they are not there, anywhere

I've seen my AI at every place there supposed to be except these 2 flights. Makes no sense...what could be causing this...theres plenty of spaces on the cargo ramps, I've even tried designating spots, but never got them to be there. Any other flights I put in show up and depart and arrive exactly as scheduled without a problem :-/