The gform_activecampaign_contact_pre_sync filter can be used to override the contact properties before the contact_sync request is sent to the API.
This filter can be used to modify the tags which will be added to the contact.
ActiveCampaign Feed Meta
IntroductionThe _autolink_feed-object meta for the ActiveCampaign add-on is an associative array containing the properties which determine how the add-on should process the form submission.
This filter is used to enable the display of the tags field in the Map Fields section of the ActiveCampaign feed.