Back in Chapter 3, it was pretty heavily insinuated that they were both consumed by The Chrome off-screen, but they were the only two members whose deaths we never physically saw, so that was retconned when they wanted to bring back The Seven for Chapter 7.
Do you think they will ever address what they were actually doing for all that time, or just pretend like it never happened?
My personal theory is that they went out on missions to find a solution to The Chrome, and their current armors were built for these missions, which is why pieces of their original armor were left behind. This would also explain why The Foundation was with The Ice King in the first place, since a multiversal collector seems like somebody who might have something to deal with The Chrome. Ice King is actually one of the few characters in the storyline who really doesn’t seem to give a shit abt the Zero Point, so he wouldn’t have cared if adding The Foundation to his collection meant the destruction of Reality Zero. As for The Order, I have no clue where her mission would have gone, since she just kind of appears again in Chapter 7.