When set a track is side-chains, it's mute in master line.

[lbren]

Hello everybody, I'm a newbie to use Soundop, I very like it. 
I found that When I set a track is side-chains then it's mute in master line. 
I hope the track that send to side-chains is not mute and it can be mix in master line,
How can I do this except I duplicate it once?
Thanks.