When installing a new Android 7.0 phone I chose the option to Copy From Nearby Device. All the apps on the older Android 4.4 device were copied and seem to be working but only 4 actually have any data in them: Gmail, Calendar, Hangouts (but not Hangouts Dialer) and Contacts. Every other app is an a cleanly freshly installed state: No accounts, no data, no saved games, etc.
What happened and how can I correct this? The older device is not rooted and neither is the new one yet (but I intend to do so once I figure out why).