Bus "section" automation copying not working??

Hi, I think there is something wrong when you just select a region on the bus track for copying a volume automation to another part of the song.
 
 For example when trying to copy volume bus automation from the first chorus to the second chorus of the song.
 
 I see that when you try to copy a region, sonar ALWAYS copy the entire bus envelope from the begining to the end....so when you paste it on the second chorus of the song, it pastes the whole envelope from the begining and not the section that I was selecting (greyed) and copying.
 
On the other side, copying and pasting sections of audio or midi tracks envelopes works perfect as it should be! :)
 
So, this problem is just copying on buses.
 
Anyone noticed this?? For me is very common sending to a bus a group of tracks with chorus voices. Then automating volumes on the first chorus of the song and with that work done...I cant copy to the next chorus...right now I must do it again for the second chorus and over again if there are more choruses!
 
Anyone noticed this?
 
Daniel