Note that this change will need to be made again if upgrading.
Issue: When I update the date and date time formats under Settings > Company > Localization, they do not take affect in the Support Manager. I see the original date time format in support replies.
Solution: The Support Manager has its own config file under /plugins/support_manager/config/support_manager.php that sets the date and date time formats independently. To resolve, edit this file and look for the following variables, and change the formats as desired.
Configure::set('SupportManager.time_format', 'H:i:s'); Configure::set('SupportManager.reply_date_format', 'M j Y g:i A');