To import your Shopify products, please make sure your Shopify account is connected to Boost. Check out this article that explains how to do it. To import products from Shopify:
1) Press Import
2) Once your products are imported, you will need to select which products you want Boost to create Tags for. If you want to create Tags for all of your Shopify products, click Select all & press Create Tags.
3) Once your Shopify products have been converted into Tags, you will see them displayed on the Products page. A new filter will also be automatically added to help you filter between imported and native Tags.
Please note that Shopify products converted into Tags can only be edited on Shopify. Boost will update and reflect any changes you make to the products on Shopify.
You can, however, add attribution to Shopify products on Boost.