Hey, thanks for the question. As you have noticed, the images are being generated in the browser and displayed by referencing the Image Merge element’s Blob URLs:first item ( first item because you can process a list).
However, Blob URLs only exist for the current browser session, and should not be saved to the database if you intend to reference them later. Instead use the Bubble URLs:first item. This is the URL of the file after upload to Bubble’s servers and will persist.