Custom Loot table for Genesis 2 quest "Survive the ARK" not working

[TheGhostDivision]

I have a problem with Gen2 Quest Loots. We wanna open up the transfer to our Gen2 maps tomorrow aswell and did a complete rework of the loot to balance it with the other maps. It works totally fine until yesterday we learned that you cannot change the loot table for the gauntlet mission "Survive the ARK". My research in the DevKit showed that all quests are named in the same way:

MissionType_<ActualMissionType>_<MissionName>_<Difficulty>
i.e. MissionType_Race2_MilkGlider_Alpha for the Maewing Race

The only exception from this is the mission "Survive the ARK":
 

Gauntlet2_MissionType_STA_Endless_Alpha

According to the loot pros at beacon the containers for those two quests would be "Race2_Missionglider_Alpha_C" (this works just fine) and "STA_Endless_AlphaC" (this does not work, also not working with Beta and Gamma). The idea behind this is that the container is named like the Mission Name without the "MissionType" in the beginning.
According to one guy from Beacon this worked in the beginning of Gen2 but stopped working around June 18th. I already tried different strings like "Gauntlet2_STA_Endless_Alpha" etc. but the quest always gives me vanilla loot.

Do you have any idea on how to get the String for that quests loot container?

The quest has added two loot sets by default:

is there any way to override those sets via config maybe?