My character WIP has hard edges on her eye lids lips boots and nose. They need to be there or things don't have the right tangents. Also you dont need a hard edge you need to preserve selection which is another thing entirely. Third time Ive said this but you obviously have not even given me the time to look. If you use preserve selection those edges will be sub divided but not moved which is what you are asking for with extra edges. Of course you'll need to take a second to see this.