In a medium bowl, cream together the butter and cream cheese. Beat in ¼ cup of sugar and vanilla. Combine the flour and salt; stir until well blended. Turn out dough onto a piece of plastic wrap and press together to form a ball. Divide the ball into 4 portions, wrap each one in plastic and refrigerate for at least 2 hours or overnight.

Preheat the oven to 350 degrees F (175 degrees C). In a small bowl, toss together the brown sugar, 6 tablespoons white sugar, ½ teaspoon of cinnamon, and the chopped dried apricots. Set aside.

Roll out each portion of dough into a circle about 1/8 inch thick. Spread about 2 tablespoons of the apricot preserves over each circle, then sprinkle each one with some of the dried apricot mixture. Using a knife, cut each circle into 12 wedges like a pizza. Starting at the wide end, roll each piece individually up towards the point. Bend the ends around to form a crescent. If dough is sticky, return it to the refrigerator to chill. Place rugelach point sides down, two inches apart into a parchment lined or greased baking sheet. Brush with milk then sprinkle with a mixture of the remaining 1 teaspoon cinnamon and 2 tablespoons sugar.