Saving and loading a template is a bit different. The first step is the same.
When you save, you now have the option to select sections. Selecting all sections (default) is essentially saving a page template. Selecting specific sections only is saving a block template.
When it comes to loading, clicking the Insert button will insert the "page" template after the last section of your content if it already exist.
You can insert a page or block template under specific sections by clicking on Insert Template
For downloading, deleting and importing a template, you need to go to X > Templates to do those.
For more details, please see our Template Manager article.
Also check out the Builder Tools section in our Knowledge Base