When switching from trial to the full version, you only need to provide the serial number. All backups, syncs, and other settings will be kept.

On a Windows computer

1. Start Acronis True Image.
2. On the sidebar select Account.
3. Click Enter serial number:
   
4. Provide the serial number and click Activate:
   

Now you can use your Acronis True Image. On the Account tab, you can review license details, current build number, check for updates, and purchase Acronis Cloud Storage and/or additional licenses of Acronis True Image:

On a Mac

1. Open Acronis True Image.
2. On the menu bar, click Acronis True Image, and then click Enter Serial Number:
   
3. Insert the full serial number, and then click Register:
   

 Now you can use your Acronis True Image.