Projects in GlassFrog can be placed into an "Archived" state to remove them from the main project listings. Archived projects are only accessible to Premium users through the search feature.
To access archived projects, navigate to any circle page, then click the projects tab. Next click the magnifying glass icon to go to the search page:
Once on the search page, check the Archived checkbox in the Status section. After a delay, this will display archived projects that meet the other search parameters.