we need to know if it is possible to enable tracking parameters previously configured on Brand Configuration, only for a single delivery without cancel those parameters from the Brand Configuration . Is it possible?
You can add the tracking parameter manually in the delivery itself BUT the tracking parameters set at Brand level would add its own too. If the 2 set of tracking parameters don't conflict, it would work.
Another option is to create a 2nd Brand without any tracking parameter and you will select the new Brand for the delivery and do the above step nevertheless.
Hope this helps,
Few things you could do:
context.delivery.name == 'DM123'
$(urlstring).indexOf('utm_source') === -1