[Asterisk-Dev] iaxcomm / call transfer issue

[Goldenear]

I'm testing iaxcomm :
Why a call transfer is not possible with native briging between two 
endpoints ?
Indeed, call tranfer only works when the asterisk server stay in the 
path :(

Wouldn't this be possible :
A is native bridged to B
A wants to transfer B to C
A asks the * server what is the url/ip of C
A asks B to call C and then quit the path (B and C are native bridged)
This could also work for call park if C is the extension for call park, 
isn't it ?

... and what about this ? :
A is native bridged to B (line 1)
A is also native briged to C (line 2)
A bridges B and C and quit the path (B and C are native bridged)