I have imported some outlines of islands from Google Earth and I can see them in my maps but it appears that I've not been successful in getting them recognized as "boundaries". I am unable to assign a depth value to them to aid in contour generation. I have been through the manual line by line without success. Any help would be appreciated.

How are you importing these? As map layers or as boundaries? Can you post a screen shot of what you have and I am sure I can help.

I'm working with RM2, 5 days ago upgraded V1 --> V2. Perfect! Thanks.
When I've imported some outlines of islands (shore) from Google Earth (polygon.kmz) I can see them in my maps, and after a brief generation in the Map Project it's all working fine. No worries so-far. However, when I delete a specific boundary I still see in the Map Project the outline of the specific boundary (black line). With of course no recognition anymore of the (depth) data. It simple don't disappears? What I'm doing wrong?

Are you regenerating the map after removing the boundary? Or is it possible that you added the boundary as a polyline/polygon layer to the map directly? In any case, you should be able to find and remove any map component by searching through the layers in the layers panel. The layers that boundaries can contribute to are Water Body, Shorelines and Land.

Thank you very much Matt for your quick answer!
Yes, I regenerate. Yes and no, directly and indirectly.
I forgot to delete it extra in the Layers panel indeed. Its OK now.
Keep up the good work!