Thanks gile, I had seen that when I was searching but I was looking for using the ISOLATEOBJECTS "system". AutoCAD doesn't just turn the visibility off when you use the ISOLATEOBJECTS command. I was trying to isolate objects within my code that could be turned off(visibility back on) using the built in UNISOLATEOBJECTS.
Might have some time next week to experiment with turning visibility off, add Xrecord to NOD, and adding XDATA to entity and see if AutoCAD can unisolate it.