I think what has happened in Creo 3.0 is there are now 2 volume roughing sequences. The classic volume (old) which is menu manager based, and the new updated volume with the modern user interface. The classic volume is shut off by default and only shows up when you bring up an old files created using the "classic volume milling" sequence, Using templates is using the "old" volume milling sequence.
I think it may take a few more releases to get the new volume sequence operating properly. This same thing happend a few years back when the profile sequence was modernized.