Retroactive errata?

[larry marak]

One of the Kursk scenarios in Heroes includes the Sturmpanzer I, a unit found in original Panzer Grenadier only. This vehicle was called the Bison, it mounted an open 150mm IG gun, 1933 model, on a Panzer Ib chassis. There was exactly one of these present at Kursk, in the understrength 704th company of the 5th Panzer division, part of the strategic reserve in the German order of battle.

Now in South Flank we have the Grille, the final incarnation of this sturmpanzer evolution in combat scenarios.

Should we replace the IG33sp in the earlier Kursk scenarios with the Grille?