Broken mission after last two updates

[FOXFIRE TWOONE]

I have a mission where their are two SB 3s land on stennis at beginning of mission. The second would be trapping just after the first was turning to taxi to parking spot. Worked fine until update before this weekend. Now the second ( SB 3 ) turns an crashes in sea just short of carrier. I tried adjusting the two a/c to see if I could get the second one to land again but haven't been successful. I also notice that when saving the mission if I don't save with the map at a certain

nautical miles the second SB3 would fly over then eventually land, but that is not what I want. I have also notice that on the F10 map the a/c are moving at significantly different speed depending on nautical miles when mission is saved in the editor.

 

I am wonder if anyone else is have problem of this sort with their created mission or if you may have fix for it.

 

Thanks