After the Ai builder has generated your website, you will be taken to a page called the Playground, where you can make changes with ease. Be sure to remember to click on the 'Save and Publish' button at the top to save all of the changes you have made.
From that point onwards, all changes are automatically saved, making your future editing even simpler!
Step-by-Step Guide to Save the Project
Here's a short video that walks you through the steps to save your project.