Normally you would issue invoices in date order , so that this would not be necessary
Can you explain why you do not do this?
Once you update any old invoice for any reason, the report bases on last modification action same like the following
I request the same thing, I want the invoices displayed to be sorted by Invoice Date or Invoice Reference
Consider clicking the icon as recommended in the forum rules. This signals that you Like / Support the request made. Obviously if you had something new to add that should appear as a new reply.
On another note the report view screens can not be sorted themselves and the problem with reports such as this compared to tabbed lists is that you can not sort on any column before getting to the view screen. So I also support the idea of more flexibility in these view screens, not only aged payables and receivables, but that is the challenge for the Developer.