[c-nsp] BGP import from global to VRF ?

[Jeff Bacon]

I can read the doc and understand what it's trying to tell me
(http://www.cisco.com/en/US/docs/ios/12_3t/12_3t14/feature/guide/gt_bgiv
t.html). What I don't understand is how this can work both ways.

Say there is route 10.1.1.0/24 in global via g1/1 10.2.2.2.
VRF Green has 172.31.1.0/24, 172.31.2.0/24.
Import 10.1.1.0/24 into VRF Green. 
Host 172.31.1.1 in VRF Green tries to talk to 10.1.1.14. 
Magic happens, packet goes out. 

How does 10.1.1.14 know how to get back to 172.31.1.1? 

There's a context here, and I'm totally missing it. 

Anyone actually use this feature?

Thanks,
-bacon