So I had a quick check through previous posts to see if this was redundant, apologies if it is, I didn't see this issue come up.
Super magnets are Awesome, for the record 😁, although I seemed to have had a hiccup with supplies. Gold and personnel Dutifully marched into my pockets but not supplies.
I was driving at the time so no promises that I didn't pick up Some, but certainly wasn't all. In fact I'm almost certain I saw another supply spawn in as everything else (that wasn't a supply crate) cleared off the map.
I did a double collection in the last area to see if they would pick up after everything else, and they persisted.
So yeah, Super Mag x 10 gets everything except: