Place cream cheese in mixer bowl. Attach bowl and flat beater to mixer. Turn to Speed Two and mix 1 minute. Stop and scrape bowl. Turn to Speed Two and gradually add milk, mixing until well blended about 1 minute. Stop and scrape bowl. Add cheeses, onions, pimientos, half of the bacon and half the pecans. Turn to Speed 4 and beat until well blended, about another minute. Season with salt and pepper to taste.
Transfer mixture to a large piece of plastic wrap. Form into a ball and wrap tightly.
Repeat with the remaining mixture. Refrigerate (or freeze) at least 2 hours.
Combine the remaining bacon and remaining pecans, parsley and poppy seeds in a pie plate. Then, remove the plastic wrap and roll the cheese ball lightly in the bacon/nut mixture until evenly coated. Wrap it back up in plastic wrap and refrigerate again until ready to use.