Two images for each counter: x.png for front and x-b.png for back.
Using mass loader to load them all, defining Layer (“disrupt”, ^D to activate) and add “ends with -b”. Layer is NOT marked always active.
Mass loader loads them backs fine but units in palette are displayed with backs as fronts i.e. Basic Piece is defined with a correct image but in palette it shows it as if back was “standard side” of the counter.