You can set up a Product CSV export with EZ Exporter containing only products/variants that belong to a specific collection or set of collections using Custom Filters.

In the Data Settings, set a Custom Filter like this:

• Custom Collections - Titles contains My Custom Collection

This will include only products/variants part of "My Custom Collection" in the CSV export. If you use Smart (Automated) Collections, we have a filter for it as well.

You can also combine multiple filter conditions so you can export products that belong in any one of the multiple collections you have set up.

For example, let's say you have a Smart/Automated Collection called "Best Sellers", a Custom Collection called "On Sale", and another Custom Collection called "Limited Offer" and you want to export the products and variants that belong to any of these collections. You can do so with these Custom Filters:

Data must match: any condition

• Smart Collections - Titles contains Best Sellers
• Custom Collections - Titles contains On Sale
• Custom Collections - Titles contains Limited Offer

One thing to note is we want to use the contains condition when filtering based on collections as a product can belong to multiple collections. You can filter by the collection ID or handle as well