First of all, this was not a question, and as such, it cannot be "Answered". I am simply adding my suggestion (as this is a suggestion thread).I respectfully disagree with the idea that forcing upgrades on only new units adds "flavor" to the Russian faction.The Russians already have their own flavor in unit types, doctrines, and conscripts.Please change the upgrade mechanic to affect all units deployed and not simply new ones.
This question is already answered on another thread , please search before posting a new one