What was left of the cage nut(s) was surely left behind, since it fought so hard to stay in it's home of 35 years, we figured it would only be fitting to let it rest there in peace.....

A couple of them did come through the mounting hole with the help of a screwdriver, but I don't think leaving behind what was left of the others is a big concern. A telescoping magnet through one of the other holes in the frame should give enough access to fish it out if you are a real perfectionist, but they obviously didn't get in the way of putting the new ones in, so we just said the heck with it, my knuckles were bloody enough at that point and I was seriously running out of curse words.........