Reboot erases Bandwidth Usage

[Culex]

I noticed when you reboot the only bandwidth usage saved is Days. Is it possible to also save and/or option to save Hourly usage as well?

[DoesItMatter]

I thought there was a timer setting in one of the configs for this?

Its not in the GUI, but I remember ERIC mentioning
once that there was a setting in the configs that would have it
save the data after a certain time had passed.

I think it could even be done hourly, but the thought was that
it might be too much writing to the flash?