Karibou parts lose their ElectricCharge

[damerell]

The part files KER_WheelBay_Short.cfg and KER_WheelBay.cfg both have 1000 ElectricCharge. The former is described as having "large battery banks", although the latter is not. However, when assembling a craft they have none. I noticed this in an ongoing 1.12.5 game but could duplicate it in a fresh 1.12.5 install where I installed, with CKAN, only USI Kolonisation Systems and its dependencies.

Interestingly if I loaded a vehicle saved earlier (possibly in KSP 1.9) it had the EC, but if I used the fuel switch to change the contents, it vanished.