I thought the CP's were supposed to stay in your control now unless you reset, or the area was being invaded, which I assume is determined by the presence of the selected invasion missions or strongholds?
At the moment I control the following zones: White House, Downtown East, Judiciary Square, Federal Triangle, South West, East Mall. and Constitution HIll.
I've taken Downtown West, Potomac Park and West End several times and they keep resetting. Potomac Park I could understand as as it has the tidal basin stronghold in but the other two have no invaded missions in, unless taking the settlement counts, though i've retaken that several times as well. I have also completed all the manhunt stuff.
Why are these zones resetting when the others are not?