How To UpgradePlease read
these instructions.
Download and Install The New VersionMC31 is on the
Download Page.
Find Your License and Restore itYou can send yourself your licenses from the Restore Page. Please read
Restoring a License .
Moving Your Data and MC Database On WindowsWhen you install MC for Windows, it will find your old database, copy it and use it. It should just work when you run it. You can also restore your settings at the same time.
On Mac or LinuxYou will need to restore a backup from your previous version. MC makes them automatically. Search for files ending in .zip. Restore is under File > Library.
Backup and Restorehttps://wiki.jriver.com/index.php/Library_Backuphttps://wiki.jriver.com/index.php/Restore_a_libraryBackups can contain settings and thumbnails.
What About Your Old Version?Keep it as long as you want. Uninstall it when you're happy with your new version. Uninstalling doesn't affect the new version or your data.