Set internal cargo no more functional

[PLP]

Hope I'm not double-posting or missing something obvious (google-searched the forum, I did), but the set internal cargo function does not seem to work anymore. I tried both Mi8 and UH-1H.

 

Attached is a trivial track&mission to illustrate the problem.

 

It's a great shame, Internal cargo makes flying the Huey so much more challenging.

 

Edit: attached the attachements

UH1H_customcargo.miz

Cargoprob.trk