Campaign Extraction Mission - Unable to download data bug

[VenomousFangs]

Playing Campaign through BTA as flashpoint's, got to the extraction mission and find no mech is capable of actually stopping on the nominated cap point in the base to start downloading data for the 3 turns required. The yellow marker is situated BETWEEN the surrounding hexes, hence is is impossible to move to.

Tried 5 times with various solutions as below, still no luck, data won't download.

Destroying all buildings in the base.
Surrounding the data download point with all 4 mechs.
Tried using JJ mech to land on it, can't as it isn't actually a hex.
Tried hovering air capable mechs over it, can't as it isn't actually a hex.

Anyone had this problem before? Any known remedy?

[VenomousFangs]

Checked with guys at Discord, looks like this is a known broken map bug and the only way to progress is to use debug mode and force the mission to complete.