Thanks for your suggestion, Carlosan. I am already using the import option to Invert the Green Channel using the Unity Preset.
The Normal map looks good when I first import it into 3D Coat, Invert Green Channel is checked ON. Doing this there are no seams at all (as seen in Fig.1)
Now when I save the 3D Coat document, then Close the document, then Re-Open the document the seems appear (as seen in Fig.2)
Thanks again for taking the time to reply and offer your thoughts.