During the default Magento Product Import process or when you want to update your product's images, you may want to add or update the Listing Hover images, which is an implementation specific to the Pearl Theme. In order to do so, follow the steps below:
Upload the images you want to use as Listing Hover Images to the server into a specific folder. For example: var/import
Export your products to generate a CSV file by heading into Admin -> System -> Data Transfer -> Export. Choose the Products option from the Entity Type dropdown and click on Continue from the bottom of the page.
Open up the generated CSV file, and find the product you want to add the Listing Hover image for. In the additonal_attribute column, add the following attribute: "weltpixel_hover_image=/your_listing_hover_image.jpg"
After the "=", add the name of the image, along with a slash in front. Here's an example:
Once you've done this for every product you want to add a Listing Hover image for, save the file.
-Import the CSV by going into Admin -> System -> Data Transfer -> Import. Choose the Product option from the Entity Type dropdown.
-From the Import Behavior dropdown, select the Add/Update option (or other options, depending on your needs).
-Upload your saved CSV file via the Select File to Import option.
-Specify the Images File Directory as the path to the folder you've uploaded the images to. In this example, it would be var/export.
After the import is finished, verify that you have the images uploaded and set as Listing Hover Images under Catalog -> Products -> select your product -> Images and Videos tab.