Can't change default options for RRD graphs

[leimrod]

I'm using 1.2-RC4.

I'm having an issue changing the default options for the RRD graph option in pfSense. I want to change it to:

Default category: Traffic
Default style: Inverse

But as soon as I save and then leave that page it goes back to:

Default category: Queues
Default style: Absolute

Is there a config file I can change somewhere to force it not to change back?