MAD : Mission 5 : SA342 / Gazelle : Doesn't detect cargo dropped

[DimSim]

At mission 5, I drop the cargo at the location requested. The mission does not detect the cargo drop.

The mission text also says that in the case of cargo hook failure, just proceed to WP1 and continue anyway. I like the sound of that, as it should help avoid undesirable mission repeating regardless of cause.  However when I crash the cargo, it says Mission Failed. Regardless, landing at WP1 has no effect, no trigger of mission progress.

I continued the mission after a good cargo drop. Nothing at WP1, nothing at WP2. Figured I'd just fly the whole mission and skip it at the end (after 4 retries), but at WP3, the mission triggers continued and I was able to complete the mission successfully.

Here's a screenshot of my cargo dropped at cargo location. I used manual release as auto disconnect had no effect:

Here's a screenshot of my landing at WP1, which should continue the mission and pick up some person:

[STONE SKY]

Good afternoon The mission for the Gazelle is not intended to transport cargo. At the time this mission was released, Gazelle was unable to carry cargo.
I will fix this in the next update, as well as the radio frequency setting.
Please double check your CPG, may not set the frequency