Currently when you run an A/B test on subject line, the subject line token in an interesting moment {{trigger.Subject}} will not populate for that email. This is problematic when you want to stamp interesting moments for clicks, unsubscribes, etc, on specific emails, and identify them by subject line...sales is unable to see which email the leads clicked on or unsubscribed from, etc.
I hope this functionality can be developed soon as we A/B test with a lot of emails.
Thanks,
Megan