Cant complete collectibles Campaign Milestone

What do you mean by "offline"? I play on Xbox One and was signed in online and I went through each mission to find collectibles I missed the first play through, and in each mission, the ones I supposedly missed in the collection section, I already got. I replayed the missions a couple of times to make sure I wasn't losing my mind, but I can't get them 100% now.

I did the same. Was offline/not connected to psn and played most of the campaign. Had no collectibles even after the update was complete and signed in online PS4. I've went back and replayed the whole campaign and got the ones I missed but they won't show as complete and let me claim the milestone for them. Shows 1 or 2 empty circles on some levels that I know I got them all on. Pissing me off. I'm going to erase campaign data and try once more but it will be the 3rd time completing campaign.

I should probably add that it wouldn't give me the milestones for level completion either but after connecting online it started giving them to me after replaying the campaign a second time. It's just the collectibles progress that is stuck now.