which virtual server will be hit?

Hi, we created following virtual forwarding server for internet traffics on LTM. 

     virtual server : internet-vs

     source ip: 192.12.0.1 ( downstream firewall external interface IP)

     destination: 0.0.0.0/0

  For the return traffics of this VS, do we need to create another virtual server?    If we create a new virtual forwarding server like below, will the return traffics of VS "internet-vs" hit this VS "Test-VS"? 

     virtual server: Test-VS

     source: 0.0.0.0/0

     destination: 192.12.0.1

Can someone please advise? Thanks in advance!