Unruly spawns - DM encounter wand

[Pseudonym]

Description: The spawns in a couple of new areas didn't seem to be listening to the disable encounter wand.

Location: (At least) Coastal Crags - Sacred Isle (cho_watergen3) and the adjoining screen .. the underwater smuggler's cave (can't remember exact name sorry)

Verified: -

Reproducable: Placed creatures were limbo'd and wand used but spawns still happening.

[Tanman]

Did you use the DM encounter wand when the characters were in the area or away from the area.
 
 If the characters are in the area already, then the DM Encounter wand will not work.

[Pseudonym]

I know. It was used prior to the PCs arrival.