Thank you for the quick reply and screenshot added, @Brp.

An estimate is a non-posting transaction and it directly closes when it's added to an invoice. At this time, we can check what estimate was linked on an invoice by clicking on the linked transaction on the Invoice page. However, we can't directly determine what invoice was linked from the estimate.

As a workaround, you can manually track the invoice/s linked to the estimate and manually add the details on the Description field on your estimate.

I understand the importance of this feature for your business. I'll take note of this and pass along  the suggestion to our product engineers. This way, they'll know our customer's needs and might consider this in the coming updates.

Also, read our blog to stay current with the latest QuickBooks news and updates.

Post again if you have any other questions. I'm more than happy to help. Have a good day!