If I replay chatper 7 to collect all the collectibles I missed, will they register for the achievement?

[Andrei]

Because I checked my items tab in chapter 7 and noticed I was missing some of the guardian items I collected.

[h@YLey11*K*]

NO , see guide https://www.powerpyx.com/guardians-of-the-galaxy-trophy-guide-roadmap/
" using Chapter Select will reset your Guardian Collectibles & Compendium Progress. Chapter Select doesn’t overwrite your story choices, after the chapter it boots you back to title screen but for all future chapters it keeps the choices you made in your 1st playthrough."