Migrating BB history to Hobbit

Currently I am forwarding (via BBRELAY option) all of my BB status messages to my test Hobbit server.  This allows me to fully test hobbit, configure alerts etc, without disrupting my "production" bb server.

Once I make the full switch to hobbit, what is the best way to move as much of the historacle information as possible over to hobbit?  I assume I could copy the rrd files over?  What about the history logs?  I mainly don't want to lose my year of rrd info.

Thanks,

-Charles