Originally Posted by
ShreyansShah it doesnot make difference. i did that with Lumia 800 and lumia 720 in past. then lumia 720 to lumia 730.
I just restored a Blu Win HD backup onto a Lumia 635 so it even crosses OEM's. I got Apps auto-downloaded, email accounts and emails, SMS messages...
OP - examine the backup on your 1520. Settings > backup > apps + settings > is there a backup showing? > try manage backups > delete
Then run a fresh backup.
Reset your 730 and try restore again during the setup.
If nothing else you still own the Apps and any you pay for will download free after a check in the store.