A Series of Shipyard Issues Under 1.8.497102

I have a number of issues with shipyards that I will explain in a series of posts under this thread.

The first one has to do with saved ship designs.  As the screen snapshot below shows, I have multiple ships designs listed with the same name.  I have identified the one I want to keep and deleted the others, which works until I leave the game.  When I come back into the game the deleted ship designs are back.

Questions:

1. Why doesn't delete prermanently delete the ship designs?
2. Given that I have been playing for a long time over many versions, could there be files that are loaded when the game is started that are not looked at when ship designs are deleted?