Imported image roles are lost on update in Magento 2
2
I use an import script to create products with associated images that are assigned to roles thumbnail and small image . It works well, products and images are imported and they display as thumbnail and small image on the front-end website. But when I try to edit one of those products via Magento admin, the roles thumbnail and small image are not selected in the UI and saving the product will make this image's roles to be lost. Why may cause effective thumbnail to not be detected as one when loading the Edit product page? Did I do something the bad way in this import script? Any clue of what the source of this problem can be? Here is the import code: $product->setMediaGallery(array( 'images' => array(), 'va