Is there a clear path between their spawn point and their target? If not they won't move, and you'll need to create a dig path as well (there's an action for this in MightyScript).

I've done it. Choosed a claimed block, nearby the Core and now it works great.Thx

I have a similar problem with enemy units spawned from an overworld portal not moving along a patrol that they've been assigned to from the party spawn action. Based on the experience of the original poster I may not start the patrol from a tile associated with with the portal and see what happens.

Any other advice or explanations would be very welcome.