[Imp]

Sorry last post on DRGs one.
The game does model the destruction & hence less coverage of the ERA just not which specific tile. So ERA effectivness is reduced as its hit.

You may also like to know if I remember correctly the Rheinmetal test discovered that ERA fitted as standard in "pockets" they called it rather than retrofitted was found to have a marginal degregation effect if it was hit again. They tested to see at what range they could get consistent kills & discovered hitting the used ERA again could stop the penetration at that range.