Mission Objectives - Despite capturing roadblock, the game is not registering it - why?

[Casterbridge39]

Hello All,

For some reason, some checkpoints/objectives I capture are not registering. For example, in this first mission of the Kampfgruppe Engel campaign - I 'capture' the roadblock and all US troops around it have gone...yet it's still green and an objective. Yet, some of the other capture points are not doing this... I even clicked ceasefire and there were no troops around this roadblock...how am I supposed to  complete this objective? I moved a squad right into the centre of the objective, still was not checking off..

Any help would be appreciated otherwise It messes up the game really.

Regards.