iTunes App bacups not synching in iOS 9

iOS and iPadOS


After updating to iOS 9 I decided to do a fresh reinstall since more space had been occupied.

So I did a backup in iTunes then a fresh iOS 9 restore.

After the restoration I chose "Restore from backup" to get back my settings, data and apps.

However my app backups didn't sync even though the icons are there, it seems like they're coming from the store,which I didn't notice in prior AppleVis posts.

Two apps of note, FB and twitter, have some accessibility issues with VO, that's why I decided not to update them.

How do I ensure app backups are synced instead of them beeing retrieving from the store?