Ogniem i Mieczem - By Fire and Sword

Under the Cossack Skirmish Force, Cossack Pułk and Elite Cossack Elite Pułk it reads:
"You may exchange the 3-base register moloitsy sotnia for a Mounted Cossacks sotnia of equal size. The Mounted Cossacks sotnia may be increased to 4 bases."

Does this refer to the 3-base Register Moloitsy Sotnia of the base force (at 4 respectivlely 5 FSP in Elite Pułk) or any 3-base Register Moloitsy Sotnia?

If yes would at FSP 7 (8 in Elite Pułk) the 3-base Register Moloitsy Sotnia (veterans) be exchanged for a 3-base Register Moloitsy Sotnia (elite)?

In Polish rulebook it's only base of skirmish/regiment

It's been asked before, the answer is that only one sotnia may be exchanged. And exchanging a veteran Sotnia won't give you an Elite mounted Sotnia, just a normal one!

http://forum.oim.wargamer.pl/viewtopic.php?f=47&t=4495

Ah thank you Dziękuje

Next question: Can Moloitsy rotas be formed into squadrons, creating units up to 24 bases strong?

No. Infantry of any type and formation can form up to 12 bases squadrons.

Ah ok. It's right under the squadrons rule. Ok rotas are something very similar to squadrons but with a bit more flexibility it seems.
But Cossack Rabble Hordes can be bigger Up to 20 bases!

But that's Rabbles, they just different

Inoticed in the rulebook onm pages 174/175 there is a picture of a game with a large unit of Rabble in Open Order. I guess this was taken in a stage where the rules where still being playtested?

Playtesting? Nae, they're fleeing as the tabor shoots them in the back.