Events: NPC scripts

So, early early in the game, I am working on NPC scripts for some NPCs that walk around, the problem I'm having is that when I enter a battle or even my menu window, when I come back the NPC script starts over from whatever position the NPC was in ending in the NPC traveling outside of where it is supposed to go.

There has got to be a setting or an override bit or something that remembers where the NPC is in the code so when the screen is restored, it doesn't start the script over. I just don't know what that bit or setting might be.

A little help?