CSME alt scenarios

[Panta]

I recently purchased again CS ME, the version I had was too old and I am liking the new interface and looks. Presently I am PBEM playing a scenario with a friend and I am enjoying it a lot.
Yet something caught me unaware: some of the "alt" scenarios use a different weapons database. To be precise, all tanks, whatever their model, have an effective range of one hex, while missiles keep their original range, like Saggers, with 2 hexes. I have noticed that the respective tank Hard hit and Defence values have been altered in many cases as well and all that added brings the need of a different tactical approach.
I am not arguing here about the convenience or not of any of the database employed, but I didn't find any warning or explanation about that changes either in the scenario information or in the .text file informing of the numerous version changes (in my particular case I am playing v2.01).
Perhaps I missed something, I don't know.
best,