I successfully created the following zaps:
Ghost delete member > Brevo delete subscriber
Ghost new member > Brevo new subscriber
Ghost unsubscribe > Brevo unsubscribe
I have trouble with:
Ghost resubscribe > Brevo resubscribe
It seems that the available if statements defaulted to:
Previous Subscribed: true
Current Subscribed: true

And even though I try to add text contains true or false it does not change the default true/false value.

Any ideas?