Current logic:

When going to All customers > Select a customer account -> sell tab -> orders -> All sales orders the filtering is applied on Customer account. The expectation is to have all the Sales Orders on the Invoice account.

Change:

1 step: Accounts Receivable > All customers > Select Customer > Sell Action Pane > Related info Tab > Orders > All Sales Orders 

The table represented fetch all the Sales Orders on Customer account.

The expectation is to have all the Sales Orders on the Invoice account.