If you have multiple client accounts managed under your Facebook Business Manager or AdWords MCC accounts, you may want to sort your imported campaigns by account.
First, to import your campaigns in please click on the ‘import campaigns’ button in the main dashboard.
From there, you are able to toggle between AdWords and Facebook campaigns, and also within that, view and sort your campaigns by different client accounts.
Once you have imported your campaigns in you can view which campaigns belong to which accounts by clicking on the ‘campaigns’ tab in the main dashboard, and then selecting from either 'AdWords' or 'Facebook' in the dropdown. You will then be able to view all imported campaigns, and their associated accounts.