So you've updated your Amazon images on the marketplace and those new images are now in Listing Mirror. To get those images over to your other marketplaces, there are two different methods.
1. Update Images
This is a function that you can do on a per listing basis. When clicked, LM pulls the source listing's images (typically Amazon in 99% of cases) and uses those for the listing being updated.
2. Rewrite Images
This is a function that we have on the backend, which is not accessible to you. This function chooses one integration, and forces ALL other listings to use the images of this chosen integration. Amazon is the typical choice in this instance.