How Do I Archive or Unarchive a Campaign?
You can archive your campaigns from the Campaign Dashboard. Any sites within the workflow of an unarchived campaign will still count towards your Opportunity Deduplication.
Archive
Open the campaign actions dropdown and select Archive Campaign.
Unarchive
Open up the Filter at the top of your Campaign Dashboard. Choose Archived Campaigns from the Campaign Status dropdown, then select Apply. This will list all of the archived campaigns within your project.
Open up the campaign actions on the campaign you wish to unarchive, and then Restore Campaign.
This will restore your campaign back to your campaign dashboard.