I wanted to test an approach to keeping my Inbox Activity totally cleared by Archiving everything, while bookmarking then Archiving messages I want to keep tabs on. That way I can see what’s new under Activity and what’s important under Bookmarks. But would those bookmarked notifications that are archived be cleared under the 4 week schedule or are they left alone some they remain in the Bookmarks tab?
Welcome to the Asana Community Forum @Elevation_Advertisin 
I have a couple of archived notifications that are still showing under the bookmarks. So based on that I’d assume you have to manually unmark a notification as bookmark for it to not show there anymore.