[VoiceOps] Wireshark Voip Calls Filter with no RTP

Hello All, I've recently upgraded to Wireshark 1.4.6 for MacOSX and have found that now when you do a Telephony->Voip Calls on a capture and then use that to prepare a filter, the filter no longer includes the RTP packets. It seems that the filter has changed from being packer # based filter to a filter based on the SIP Call-ID field and thus no RTP is filtered here. Is there a way to change this or have it got back to filtering the RTP as well? Thanks, Keith