Adding Imported Products to Collections
At the Import Options step you can add every product in the import to one or more of your store's manual collections in a single pass. Open the optional Collections selector, tick the collections you want, and each imported product joins them when it lands in Shopify.
Only manual collections appear
The selector lists your manual collections only. Smart collections are left out on purpose, because they fill themselves from their own rules. When a product matches a smart collection's conditions, Shopify adds it to that collection automatically once the product is live, so there is nothing to choose here.
Selecting collections is optional
By default no collection is selected and imported products are not added to any collection. Reach for the selector when you want a whole batch to share collection membership, for example a supplier drop that should all sit under a single seasonal collection. You can still adjust individual products in Shopify afterwards.
Where this fits in the import flow
The Collections selector sits on the Import Options step, alongside the other choices you make just before review. For the wider picture of every step, see the import flow overview.