Will Colleges use an old SAT test sent from CollegeBoard when making a decision?

OP already sent the scores to all the schools, so there’s no issue of “hiding” them.

OP, as noted, most schools will just use your highest. GTown will look at all but I suspect a score from 3 years ago won’t carry much weight in light of a higher recent score.

Yes, you can be semantically correct to not do something a school might only “ask” you to do. But I would not recommend it.