I am not sure Stern realized or cared about the ramifications of removing the interlock switch. The programming has not been updated to reflect this change or provide solutions to the problems it creates. For example, the coils are active in switch test which is a huge pain in the ass. Coin door ball save is either no longer available or has to be reprogrammed to work when the menu buttons are accessed. It's a bit more cumbersome of course, but so are those ass-tastic pro playfield support pegs.
Rob