AVE Situation is: IMP declares move. I can declare dodge with MOrlock and decide to move on a ladder. IMP makes 2nd shot move to the same position more less - at the bottom of the ladder. I succeded. What will happen? Where should I end my move? Pleas eremember that IMP is not discovered.
You may never Dodge into Base to Base with any model (let alone Markers like IMP-1). Moves are executed immediately on declaration with Dodge being executed at resolution steps. The Dodging troop will move as far as possible on the declared path without touching the active trooper. Yes, that means they can body-block your Dodge movement.
Imp marker declares move: you must choose between Discover (and suffer a -6 if it's in the "happy face", -0 if in the "red face") or Delay, not dodge. Remember, Imp markers count as "allied troops" until discovered, meaning they can even block a mine from going off while another enemy troop activates behind. Assuming something like the Myrmidon Officer with Boarding Shotgun declares move and you declare dodge with your trooper, yes, as @Mahtamori says your "dodge move" might get prevented to reach that position, because of Order resolution sequence: the Officer Moves, you ARO Dodge, the Officer moves again (blocking the stairs) and now you roll to see if you suceed the dodge or not, moving to where you can (you could have declared Engage, rolling PH to try and go B2B with the Officer).
The AROs against an IMP marker are the same as against Camo. http://infinitythewiki.com/en/Impersonation#Reacting_to_an_Impersonator 'The only AROs available against an Impersonation Marker are Discover, Change Facing and Dodge.'
Little mess on my way with the mines, but anyway the IMP marker would move + move and then the morlock would need to roll dodge