The Control rules aren't concerned with MF/MP. All they care about is the Location/Hex/Building ever solely occupied by the opposing side. If the Location/Hex/Building is ever occupied by the opposing side, then Control changes hand. So all that has to be demonstrated is, Yes, my unit left the building--however briefly--so Control changes hands. Focusing on MF/MP is a Red Herring. Instead, focus who occupies the Location/Hex/Building and if the enemy is ever in the Location/Hex/Building alone.
A unit moving inside a Building is not subject to a Minefield attack. The mention of the attack when using Bypass shows Rowhouse Bypass is "outside". It also shows the "Long bypass" is outside. The earlier DD7 to EE7 movement is also subject to attack. For that to happen it has, you guessed it, leave the Building and re-enter it. If each hex were Mined, then a unit would be attacked in both hexes. This is why I keep mentioning Minefields. You cannot be attacked by them as long as you remain completely inside the Building. The case of FFMO/Interdiction for Rowhouse bypass also shows the unit is "outside". You have to be in Open Ground to even be Interdicted so the unit clearly isn't in the Building. A Snap Shot along the side does not receive other TEM in the hex. The rule covering Snap Shot (A8.15) says "
The FFNAM/FFMO DRM cannot apply (even if the entire length of the hexside is along Open Ground), nor does the TEM of most other terrain in the target hex ..." so clearly the Snap Shot considers the moving unit "OUTSIDE" of the TEM (e.g. Building).
If you can't see that each of these examples clearly suggest the moving unit has temporarily LEFT the Building, then I guess we have to agree to disagree.
Having said all of that, Perry has clearly ruled. That is his role. So now, all I am trying to do is understand how to adjudicate it in game play. In
this post I offered the three examples I included in my article. In the first two instances Perry has ruled the moving unit retains control. The third examples is almost universally consider a loss of American Control. In all three examples, the American unit never leaves a Building Location. In all three examples, the American unit demonstrably leaves the Building, even if only momentarily.
So as near as I can tell, in the first two situations, the American unit moves from on Building Location to an adjacent, Accessible Building Location. In the third example, the unit does not. To be fair, I do not think the third example has a Perry Sez on it so I can not say for sure Control is lost.
@apbills this is why I suggest the rule needs a clarification or errata. As written, Control should change hands in all three instances. As adjudicated, the first two do not. What remains to be seen is how Control is retained. Is it retained because the American unit never left a Building Location? If so, then the Americans must also retain Control in the third example. Is it retain because the American unit in the first two examples moves between adjacent, Accessible Building Locations of the same Building? If so, then the third example remains as we currently understand it. That's what needs to be clarified IMO. Right now, I can only guess at the intent (which I believe to be the adjacent, Accessible Building Location of the same Building). -- jim