Mines on hilll 243 Soviet mission - how?

[Yambretta]

I'm having major problems with this mission.

I've cleared all germans and taken the hill, still got my tanks and have set up defence but game is not moving forward and is still at the take the hill stage.
When highlighting in misson brief (red circle thingy) I stand troops in that area but still the game does not know the hill is taken and refused to move on
Played it 3 or 4 times now from different points in time with no success.

And hiya with my 1st post