Hi!
I upgraded today to v. 7.6.1. with the changed behaviour of how custom fields are saved. After upgrading I noticed that my birthday Emails were not sent. My field was previously stored in the database in the format dd/mm/yyyy. During the upgrade, the table was altered and the format is now yyyy-mm-dd (table #__acym_user_has_field).
I guess this is related to the change in verison v.7.6.1
However, the birthday Emails based on this custom field are not triggered anymore.
Thanks.
Frank