I've tested it and it doesn't work the way it was after the update, specially editing soldiers stats, it doesn't work at all, please fix this issue thanks!
I have done the same
It seems to alter soldier stats while in the field
But that is troublesome as the game can crash
Also, the supplies option does not work, but the intel, alloys and elerium crystals do
CH struggles to provide us with the best possible trainers
But sometimes a bug slips through
I know the CH team will fix whatever causes this
They are the best
CH FOREVER