How can I upgrade from the demo version of your plugin to a full version?
Let's say that you have installed the demo version of one of our plugins and you now want to upgrade to the full version. After you buy
Step 1: Buy and download the full version
Step 2: Deactivate the demo version from your blog
Step 3: Delete the demo version from your blog
Step 4: Install the full version on your blog
All your existing settings will be "remembered" by the full version. So, whatever you did with the demo version will not be wasted :-)