BDBTankType variable for Balloon Tanks missing from Centaur Tanks

[Pappystein]

So I was looking to create either a part switching config or a whole new part for the Monocoque Saturn S-V Centaur C/E stage, utilizing the ingame assets. During my prototype building based on the Centaur D tank file, I discovered a serious flaw.

Fuel switching was updated by Jso to use Variables a couple of years ago... One of the Variables is bdbTankType if set = Balloon then Balloon tankage mass modifiers are used with the tanks in question... saving about half the mass per unit fuel.

The variable is applied to ALL atlas parts and The Vega Parts... but the Centaur tank parts all appear to be missing it:

The stand-alone variable line is:

bdbTankType = bdbBalloon

If you look on any of the non Atlas V atlas tanks you will find it (same with Vega)

Tank files affected:
bluedog_CentaurD_Tank
bluedog_CentaurIII_FuelTank
bluedog_CentaurT_AdapterTank
bluedog_CentaurT_ShortTank
bluedog_CentaurT_TankA
bluedog_CentaurT_TankB
bluedog_CentaurT_TankC
bluedog_CentaurT_TankD