Unmatched functions between CoD

[Mitch]

How about equivalent offset? Is there an efficient way to recover them?

In CoD2, I look for a text close to a function that uses the player client address and then find the same text in other versions.
This might work depending on much difference between 2 and UO.

Edit: you might be able to find some of the addresses if you find and decode one of the player GSC functions like GetStance() or getEntityNumber and the kick function too.