[Suhiir]

Thank you very much for the conformation/clarification.

Let me nit pick a bit here to be sure I understand. You said :

"It depends on the the picklist and how much you want to change things. The picklist looks for formation X and from year Y - year Z it picks it."

So for example, the AI wants a Rifle Company in 1986, at the moment that's formation #11 (Rifle Company 1/73-12/89).
Does it look specifically for formation #11 knowing from the internal pick list that it is an infantry company and available in 1986?

Were I to for example change Formation #11 from availability dates of 1/73-12/89 to 1/69-12/85 and formation #12 from 1/90-12/120 to 1/86-12/103 would it then select formation #12 instead?

I'm assuming that while you can add new formations to your hearts content the existing ones MUST remain in their current slots and of their current type. But can you alter the availability without causing problems as long as you stay in "the ballpark" - i.e. not change them from say 1/73-1/89 to 1/110-12/120?