When moving to the next page in filters.pl, the filter resets entirely. To recreate: 1. Search for a vendor with more that 20 invoices. More is better. 2. Click receive shipments. 3. Create some sort of filter on the left. In our case we are viewing closed invoices so we check that box and want to sort them by "shipment date reverse". Also view only 20 invoices at a time unless your vendor has a lot of invoices. 4. The first thing to note is that the column sort function only sorts the 20 results on the page, not all the available results (this may be similar to Bug 35866). If you click to the second page of results, the filter is entirely reset. If you are viewing closed invoices, those now disappear. Your sort order is also gone and if you were viewing certain dates, those are gone as well. It doesn't seem like you can ever get past the first page of results, which means anytime you're not sure of the shipment date, you'll have a hard time finding the invoice.