The default tag that Gazelle applies to each sync to Mailchimp will include the date & timestamp of the sync and cannot be edited in Gazelle. However, you can edit these tags in Mailchimp and remove tags you are no longer using.
FROM MAILCHIMP
Step 1: Go to Audiences > Tags
Step 2: Select the Tags you want to edit.
Step 3: Make changes.
Step 4: Done
