Will updating this section with the new code erase all the work I’ve done so far?

Short answer: No, it won't :)

When you update your section file with new code in Shopify, it typically affects the layout, functionality, or appearance of that section on your storefront. However, the core content you've entered through the Shopify Theme Editor remains intact.

Think of it like rearranging furniture in a room—you're just changing how things look and function, but the items themselves remain the same. Your product descriptions, images, and other content are stored securely in the back-end database, so they won't be affected by code updates.

Now, if you've added any custom code manually—perhaps to tweak a specific feature or integrate a third-party tool—that's a different story. Changes made directly to the code could potentially overwrite or conflict with your customizations. So, it's always a good idea to double-check any custom code after updating to ensure everything still works as expected. Or make those changes to the updated code.

But in terms of your main content and data, it's all safe during updates. Shopify's infrastructure is designed to preserve your store's integrity while allowing for seamless customization.