Put finished projects away, and get deleted things back.
Archive
For finished projects you still want to look at. Right-click a project card → Archive.
Archived projects leave the Projects page but open as normal. Find them under Archive in the menu under your name, where Restore to Projects brings one back.
Trash
Deleted projects, tasks, RAIDD items and companies go to Trash (in the menu under your name).
Search or filter it, then click Restore to bring something back.
Owners and admins can delete something forever from Trash. Your firm can also empty Trash automatically after 30, 90 or 365 days (Archive → Keep deleted items).