Hi Ryan-
Thanks for the question! You can go back to using BoldGrid, but it does take some effort. That’s because once a page has been edited by Elementor, often times its layout will break or look differently than it did with Elementor. Usually I recommend re-creating your pages in the Post and Page Builder rather than trying to convert the existing pages.
First, you’ll need to re-install the Post and Page Builder plugin and the Premium extension. You can download them from these links:
https://downloads.wordpress.org/plugin/post-and-page-builder.zip
https://repo.boldgrid.com/post-and-page-builder-premium.zip
Then, you’ll be able to tell which pages are Elementor pages and which are WordPress or Post and Page Builder pages easily from your pages menu: