[Vic]

Um, I’d say it depends on how you built the thing from the beginning.

My inital idea would be to precomp your letters animating, or placeholders to later put in the graphics, then use trapcode particular with the comp as your source particle.

That way you can go and open the precomp later and put in what you need.

Not quite sure if that was what you were asking, but hope things go well/