Bunker Buster Side Mission - Move Payload?

By robertpolson, in Imperial Assault Rules Questions

"The explosive payload cannot move though doors, impassable terrain, or blocking terrain."

"The mission ends at the end of Round 6, when all heroes are wounded, or when the explosive payload enters the weak point's space."
Does this mean that the rebel players can move the explosive through imperial figures at no cost or do they treat the payload movement like any regular movement?

You got the answer from Clipper on BGG, but here it is again.

The payload is not a figure, it is a token, so it can co-exist in a space with a figure. It is moved by spaces, not by movement points, so extra movement costs do not apply by definition.