consolidate BBM contacts from 2 devices onto 1

[Norrinradd]

Need help - i have a personal BB and a work BB. It’s a hassle. i want to consolidate the devices - especially the BBM contacts. i have about 30 on each device.
Is there a simple way to migrate the BBM contacts from personal to work?
Do i have to re-invite everyone?

I can't figure out how to migrate (device switch) the personal BBM data ONLY without overwriting what’s on the work phone.

personal device is an unlocked (T-Mobile) Bold 9000 (6.0.0.380); work device is an AT&T Bold 9900 (7.0.0.440)

Any suggestions would be welcome - I’m stumped!

thanks!