@joseph Received = queued for delivery, whereas saved = delivered to mailbox(es).
Received is therefore the inbound equivalent to the outbound 'queued for delivery'. The problem is that received does not have its own filter label so you cannot show inbound received (queued) messages without also showing outbound mail queued for delivery.
@girish As you have been tagged in this thread, could you perhaps also comment on the filter settings not been saved on page reload?