We have an issue with the overview when superiors are approving invoices that employees has previously approved.
It can be difficult for a superior to see who did what on an invoice.
Therefor i would like to suggest an extra filter besides "show all" and "main actions", it could be called "approvals" or something like that.

Also it would be nice if its possible to force the invoice to open to the history with this filter when a superior has to approve it.