Destroyed units keep their detection level high

[Dinglir]

It is now the winter of 1941/42.

Playing as the Soviets, I have managed to destroy a German unit. This unit is then rebuilt at the western end of the board (as it should be). However, it keeps a high detection level (rather than having it reset to zero).

Not really important I guess, but it does look weird.

[morvael]

I'll try to fix it. I guess they are visible until end of Soviet turn in which they were dedtroyed, right?

[morvael]

I checked and their detection level was quite low on the next Soviet turn (so only counters were visible, but without details). I have fixed this.