Or if it gets spawned on a waypoint, just usse it's tag.
Just a note of warning, destroying items and placing them at the same time will mess up the location. The destroyed one still "resides" so the new isn't in the exact same spot but slightly pushed aside to a 'free' position.
So you'll have to delay the spawn. DelayCommand or ActionWait wont work, so there's;
1) Using a delayed ActionPauseConversation (only in conversations)
2) Delaying another script being triggered which adds the new placeable.