player1 fanatic
Fanatic
The issue is that most unit promotions or penalties are carried over with upgrade, exempt those explicitly forbidden (and there are no many of those).
So Tank promoted from Cavalry:
-will be more vulnerable from other horsemen
While Lancer promoted to Anti-Tank (or was it helicopter?)
-will have penalty on defense
-will have no defensive bonuses for terrain
This also leads to getting some bonuses, like above mentioned Lancer retaining Blitz (which neither anti-tank for helicopter have).
.
Issues like this existed before patch too, but were much more minor.
For example, artillery upgraded to rocket artillery kept "must set up" promotion (fixed in this patch).
Or chariot archers upgraded to cavalry units still lost the turn when moving to rough terrain (not fixed with patch).
From beneficial ones, most notable one is when pikemen upgraded to riflemen kept +100% bonus vs mounted units.
P.S.
Just to add, new -33%/-25% city penalties are one of the few promotions "lost with upgrade", so lancers going to anti-tank won't suffer from it. Not will chariot archers start suddenly to have double city attack penalty, when upgraded to knights.
12/22 HOTFIX update:
Issue is partially fixed.
So Tank promoted from Cavalry:
-will be more vulnerable from other horsemen
While Lancer promoted to Anti-Tank (or was it helicopter?)
-will have penalty on defense
-will have no defensive bonuses for terrain
This also leads to getting some bonuses, like above mentioned Lancer retaining Blitz (which neither anti-tank for helicopter have).
.
Issues like this existed before patch too, but were much more minor.
For example, artillery upgraded to rocket artillery kept "must set up" promotion (fixed in this patch).
Or chariot archers upgraded to cavalry units still lost the turn when moving to rough terrain (not fixed with patch).
From beneficial ones, most notable one is when pikemen upgraded to riflemen kept +100% bonus vs mounted units.
P.S.
Just to add, new -33%/-25% city penalties are one of the few promotions "lost with upgrade", so lancers going to anti-tank won't suffer from it. Not will chariot archers start suddenly to have double city attack penalty, when upgraded to knights.
12/22 HOTFIX update:
Issue is partially fixed.
