If a mux is not connected, the mod makes a message go through the following connected mux twice.

I have a bunch of muxes in my mux pool. 
<mux class="org.jpos.q2.iso.MUXPool" logger="Q2" name="xyz-mux">
 <muxes>xyz1-mux xyz2-mux xyz3-mux xyz4-mux</muxes>
 <strategy>round-robin</strategy>
</mux>
xyz1-mux is not connected. Say messages 1 needs to be sent, the mod check picks up xyz1 but its not connected so sends it through xyz2. Message 2 satisfies the mod check and sends it through 2 again.
me