I come from a lifting background too (20+ years)…I still lift but decided to give my focus to cycling. As mentioned the two sports are at rather opposite ends of the spectrum.
You may also want to check out Greg Doucette…pro bodybuilder who also cycles (non competitively). I know he’s covered it to some extent. Granted he’s not natural so that certainly enables him to better maintain muscle mass.
Also…I couldn’t resist this pic!