Moving a unit being air transported eliminates that unit

[swagman]

I am running 2.30.

I was air transporting the 25th Brigade from Cooktown. When half the Brigade was in the destination hex, I set it to move to a Lae, together with several other units. The air transport had not completed when the units actually moved into the Lae hex. The 25th Brigade was missing from the Lae hex! The component that had moved to Lae arrived several turns later as a replacement in Brisbane.

There were still components at the originating and destination hexes of the air transport (ie there was part yet to be transported and part was shown still in the air landing hex). I allowed the air transport to complete and the units merge, then moved this to Lae.

I then moved the replacement from Brisbane to Cooktown and started airlifting it to to the same hex as before. Half way through this I decided to retreat my forces from Lae back to the starting hex, which occurred while the air transport was still in progress. When the units moved from the Lae hex, the 25th Brigade was again eliminated.

I then reloaded the game and changed the air transports to move supplies. Then, when the 25th Brigade moved it was not eliminated.