HoMM VII Haven Units – Haven faction units from the seventh installment of Heroes of Might and Magic.

If the gr2 files are exported through 3ds Max, it won't work. I tested how the game handles gr2 files from the SDK 2.6.1.0 for Max 6, 7, and 8. In principle, it reacts to them and can work with them, but the problem is that Max has its own scaling system. Simply put, theoretically, the same file exported through different programs, even if the SDK version is the same, will not be identical.