Deepin typically provides a "System Upgrade Tool" for major version upgrades, which aims to simplify the process and migrate your data and configurations. While this tool is designed to preserve your home folder, it's always highly recommended to back up your essential files and application data before any major system upgrade, as unforeseen issues can occur. If a fresh installation becomes necessary, and your /home directory is on a separate partition, you can generally reinstall Deepin Walgreens Listens without formatting the /home partition, thus preserving your files. However, you might need to re-install your applications.