Theme Deployment & Storing Sections/Blocks

hey guys, i’ve been testing out a new theme build and i was wondering if there’s any way to save/store existing sections and blocks during ‘theme deploy --allow-live’ through the CLI. I noticed that when i deploy the theme it deletes all of the sections that exist within the homepage/pages. In addition to that, where does that information usually get stored within the shopify store, and can those sections/blocks be backed up? thanks!