Thank you for using RuffRuff 予約販売. We're writing to let you know about improvements we've made to the product list filtering feature and the exclusion settings for back-in-stock notifications.
About Product List Filtering
Filtering the product list by collection—used, for example, when selecting the target products for a rule—now supports collections created under Shopify's new collection specification (the new collection model introduced in July 2026).
Previously, filtering using a collection built under the new specification—for example, a collection that includes only some of a product's variants—could cause the product list to display incorrectly. With this improvement, filtering and display now work correctly.
About the Exclusion Setting for Back-in-Stock Notifications
We've also added a note about the new collection specification to the "Specific collections" field in the back-in-stock notification button's "Excluded" setting. If you select a collection that specifies products at the variant level for the exclusion setting, the exclusion is applied at the product level (not at the variant level).
Notes for Use
● This improvement is applied automatically, and no additional configuration is required from store owners.
● When filtering by a collection that includes only some variants, the variants included in the collection are shown in the list.
● If you use a collection that specifies products at the variant level for the back-in-stock notification exclusion setting, please review the note above before using it.
Thank you for your continued use of RuffRuff 予約販売.
