As usual, Rainmeter 3.3.2 is fully backwards compatible with skins written for any version of Rainmeter
You need only install on top of your existing installation.
No need to uninstall 3.2.2 or worry about overwriting changes you have made.
This 3.3.1 release of Rainmeter fixes an issue with new Windows 10 Insider Preview versions, where due to a change in Windows, the Notification Area / System Tray icon for Rainmeter was not displaying.
It is highly recommended that you upgrade to this latest version if you are staying on Rainmeter 3.3.