NOTE: You can click on the RMA ID or order ID itself and it will open up the RMA or order in question.
1. Orders List Page
You will be able to see the associated RMA IDs in the order list page when the order is expanded.
2. Order Detail Page
On the order detail page, you can see the RMAs IDs in two places: under Associated RMAs and when you click Return Label in the Shipping Label modal.
How can I see which RMAs are associated with an order?
1. RMA List Page
Under Returns, you will see the Originating Order ID listed under the RMA ID in the RMA list page.