For any followers who (like myself) are playing with Bing AI Image Creator. Be aware that if you are only saving the images in Bing Collections, apparently these get deleted after about 90 days. So, any you wish to keep, you need to download. There is actually a tool which will not only download collections, but also save the prompt used to generate it within metadata, but its use requires a geeky IT background (which I have). It works spectacularly well, but involves running a python script (and tracking down the value of your Bing login cookie). If you have over 1,000 images, you also need to "shuffle the deck" to get access to the older ones. Here's a link: https://github.com/Richard-Weiss/Bing-Creator-Image-Downloader