All stores using the Klaviyo integration with Recharge now have another new metric in Klaviyo called 

Subscription next charge date changed on Recharge

This metric allows merchants to identify when the charge date is rescheduled within Recharge for a specific purchase line item in an upcoming subscription order. Merchants can leverage this metric to segment and communicate with customers for whom the charge date has been rescheduled. 

How does it work? Learn more here.