How to find orders containing any product from a particular collection?

[edgerachel]

I created a collection of products that would automatically receive a 25% off discount when added to cart as a Christmas promo. No discount code required. How can I now find all orders where this discount was applied? I.e orders where 1 or more of the products from a particular collection was added.

I can see under the discounts tab, under performance it was used 4 times. So I'd like to find those.

Thanks!

[edgerachel]

Thank you! Will this work for orders that have already been placed without a tag?