I think the Purchase Orders module should allow search without having to put a date selection. The 'Partial' in particular - it's difficult finding orders that are owed if I don't know when the order was placed. If I could simply put the supplier name in the 'Partial' tab it would bring up ANY owed items.
Bumping this issue up because again today this would have been a useful feature.
This is something that could definitely help a lot of people. But just FYI, you can simple amend the date range using your keyboard. See screenshot below.