(usagi-users 03945) about Binding Updates

hello:
I have a question about BU.
In my environment, I have MR, HA, FA1, and FA2,  (kernel 2.6.15 )
when I move MR from HA to FA1, it's ok.    (I change MR's eth1's essid)
and then when I move MR from FA1 to FA2, the connecttion among MR and others 
is break.  (BU failed?)
does it support MR moving from FA1 to FA2 ?
thx.

I can tell u more if information is insufficient.

best regards,    irace