Help with campaign information

Hi. I am trying to understand the campaign replay thing.

In the past, if you find a skull or data pad, it’s saved to your profile. So you can play any time any level or even replay them until you find all the collectables.

If I finish campaign now, without finding 100% of the Collectables, will the (60%) that I did find be saved, or if I Replay will it default back to 0%?