Community Tip - Did you get called away in the middle of writing a post? Don't worry you can find your unfinished post later in the Drafts section of your profile page. X
PTC Support was able to help us. The WF5 hidden config setting nc_enable_mdb yes adds the prompts for the machinability data base to Pro/NC. They also said that the machinabilty database will be replaced with different technology in the next release.