Simply update CloudNet 2 to CloudNet 3 and CloudNet 3 down to CloudNet 2

Download the latest CloudNetTransformer.jar from the releases page and execute it by using the following command: java -jar CloudNetTransformer.jar.

Now just answer the questions and it will automatically convert your selected installation into the directory where the transformer is running (e.g. ./CloudNet_2 for a transformation to CloudNet 2). It will also automatically download the required start file for your new installation, you just have to execute it (for CloudNet 2 there are two start files, CloudNet-Master and CloudNet-Wrapper, both need to be executed).

Don't forget to replace the SimpleNameTags and Chat Plugins!