The counter on the Sales Invoice and Purchase Invoice on the left column shows all invoices in the record. Could this have an option to select it to show only unpaid invoices. This would make it clear when bills are outstanding saving the need to go into each folder to see if there are bills unpaid. For me, the total number of records in these 2 folders is relatively meaningless.
I know what you mean and someone else could argue the same point in relation to other tabs. Right now the number simply indicates how many items are stored within the tab and this probably won’t change unless ability to “close” or “archive” invoices is implemented and those invoices would then not be directly available under those tabs.