If you have the QuickBooks trial version installed on the same computer that you plan to install the proper paid version of QuickBooks then it is recommended that you follow these steps.
- If you have created a database using the free trial that you want to save then make a backup of your database before anything else. Open your QuickBooks company file with your trial, from the menu select File > Create Backup.
- Close QuickBooks
- Uninstall the QuickBooks trial version
- Restart your computer
- Install the purchased QuickBooks version
- Restore your data from your backup.