Invoices records not changing for each customer

Issue report by Clifford Wishart

Product

FileMaker Pro

Version

Pro 12

Operating system version

Mac Maverick

Description of the issue

Hi,
For some reason when I change the customer and then look at the relating invoices they stay the same. They don't change with each customer?
Any ideas, please?
Cliff

Steps to reproduce the problem

Select customer No1 then click on invoices. Customer No1's invoices show.
Select customer No2 then click on invoices. Customer No1's invoices still show.

Expected result

When clicking on invoices I want that customers invoices to show.

Actual result

Wrong customers invoices show.