Is there a way to force ammo and health pickups to respawn? I have mine parented to a func_physbox.

I'm working on a trade map and I have my health and ammo pickups set as children of a func_physbox so they can rotate. The only issue is that this breaks their auto-materialize functionality, or at least it seems that way. When I pick them up, the never respawn. Is there a way I can fix this? Any help or guidance would be appreciated.

That worked perfectly, thank you very much EnderFace!