Online flying at IVAO and switching channels in Teamspeak

Hi,I recently built myself a new FS rig and reinstalled FS9 and all add-on programs and now when flying online at IVAO using Teamspeak it doesn't work as it used to when dialing in a new COM frequency.With my old computer, if I dialed in a new frequency using the a/c radiostack Teamspeak would automatically switch channels accordingly but now when I switch from an active ATC frequency to any other frequency Teamspeak stays in the active channel despite the new COM frecuency.To put it easy I guess the best way to describe the problem is before Teamspeak seemed to check the actual dialed in COM frequency all the time but now it doesn't seem to care what COM frequency is dialed in.Anyone knows if this is just a setting I missed somewhere or has any other idea what might be causing it?