Here's an fyi, got this answer from the good folks at NAPP help desk. Thanks to Pete

Select the Path Selection tool. Click on one of the paths in the Paths palette. Click on the path in the image window. Edit> Copy. Click on the other path in the Paths palette. Edit> Paste. With the second path still selected, click on one of the four buttons to the left in the Options bar to establish the interaction between the paths. You can then delete the now-unused path.

JeffN