Traffic Graphs won't save setting when sent to Dashboards

I have issues when using the Traffic (NetFlow) graphs on my firewall. When I look at graphs and I select filters like "external interface" and "incoming" traffic, if I then send the resulting graph to one of the dashboards, the filter isn't sent along with it. I really need a graph that shows us only incoming traffic in this way. When I send the graph now, it goes back to the nearly useless default (all traffic on all interfaces). Could we get a filter option on the graphs?