I have a problem,

Please presume I have a fully defined sketch. I copied all items from this sketch, created new one on the same plane and pasted. The result is now that I have all items in the new sketch colored black (means - fully defined) while the sketch itself is marked (-) in the tree view (means - under defined). I can not find any reason of the problem. In the tree view I can see to identical sketches - one is fully defined, the second is underdefined...

Any idea what is going on?