Theres really not enough code posted to debug, but have you checked your keep settings ?

http://www.krpano.com/docu/xml/#plugin

why is this in the action script forum?

yup not enough code to debug. could be as simple as keep="false" nothing can transfer then, however you will need the same plugins on each xml which will cause them to flicker when changing scenes as they are reloaded.

your other option is to have the same plugins on both with different target urls. if the plugins are called the same thing use the MERGE command and the identical names should be over written by the new plugins with the same name i use that in a few of my tours.

otherwise just use the same set if plugins for every scene and create actions to change the target urls. they might not be hcanging for you due to some other action running at the same time. without more code we cannot help. if that is the case jsut try moving your action around that would change the plugins urls to the new colors. try onpreviewcomplete or on loadcomplete of the target.