Do they simply return to the Force pool so they can be built again? This scenario results in overflowding of Soviet Guard troops in the map, where they make a majority of forces.
Re; upgrading 4-4 guard Corps...I ask because there are a limited number of Guards Corps.
There are so many ?-4 Corps, that upgrading one in place and placing a newly built one there doesn't cause an issue (unless there are no ?-4 Guards Corps in the force pool at the start of the turn - very unlikely!)
This would have implications for other units that upgrade where there are a limited number (thinking later expansions here - you'd have better idea on those possibilities than I).
Allowing the 4-4 Guard Corps to be immediately rebuilt affects the rate at whilch 7-4/10-4 Guards Armies can enter the game. And yes, the Russians have pp issues from '42 onwards, but that is immaterial. If there are other limited units that follow this build up pattern, the rate at which they enter play is also affected by this ruling.
Re; upgrading 4-4 guard Corps...I ask because there are a limited number of Guards Corps.
There are so many ?-4 Corps, that upgrading one in place and placing a newly built one there doesn't cause an issue (unless there are no ?-4 Guards Corps in the force pool at the start of the turn - very unlikely!)
This would have implications for other units that upgrade where there are a limited number (thinking later expansions here - you'd have better idea on those possibilities than I).
Allowing the 4-4 Guard Corps to be immediately rebuilt affects the rate at whilch 7-4/10-4 Guards Armies can enter the game. And yes, the Russians have pp issues from '42 onwards, but that is immaterial. If there are other limited units that follow this build up pattern, the rate at which they enter play is also affected by this ruling.
Phil