Hi,
It appears that everything is working as expected, so there is no need to make any changes. If you are inquiring about subscribers in a specific list, you can configure this list on the Conditions tab.
I believe the complexity of the change you are attempting may be too involved for what has already been triggered and is still in progress. If you would like to confirm this, please submit a support ticket here: https://www.acymailing.com/support/.
Alternativly you can recreate your follow-up campaign with the right trigger.