There is a way to bulk contacts for updating them by a specific category: contact source, assigned contact manager, employer organization, unsubscribed, etc.
Using the bulk editor
Some fields can be bulk edited directly in the Contacts-All Contacts screen
This can be made by following next steps:
Step 1: To create a List of contacts from the Contacts menu in ActiveDEMAND select “Contact Lists”. You can make a new list of people or use a set of people that you already have.
Step 2: Select the contacts you want to bulk, add them to the list and save it.
Step 3: Go to All contacts (Contacts-All Contacts). Click the 'All Contacts' drop down to select your list or segment.
Step 4: Once the list or segment is selected and used to filter the ‘All contacts’ table, click the EXPORT button.
Step 5: Download the Excel file that you received via email (or click CONTACT EXPORTS again to see a list of all your recent exports to download).
Step 6: In Excel file update appropriate column with new data (email, YES/NO, name values).
Step 7: Go to ContactsImport Contacts. Upload the edited file.
Step 8: Update the map column data, using email as a Lookup column.
Push START IMPORT button.
When you check your Contact Lists, this list of contacts will appear updated.