Replacement for TNWeb getContentPartBytes?

I currently am able to retrieve the xml string for a BizDoc using the wm.tnweb.querySvc:getContentPartBytes package (using IS6.5). We are moving to IS 7.x and understand that TNweb is gone … is there another way I can get the xml string for a given BizDoc? In case it matters, we will not be implementing MyWebMethods server until the next version of our system.

Thanks!! with getAs set to bytes. is another service that may fit what you need.