Attachment to Day Care Workers

I realize that I am totally attached to the teachers in our son's room at day care. We have to move him (since my husband is changing jobs and the current center is affiliated with his old office in Fairfax). I am not coping well. Should I not get as attached this time with the new teachers? What have others done in this situation? Is it the case simply that every transition is hard for the mom? I admit, I'm bad with change. But I want Michael to do well in this transition.

What's the wisdom out there on how to manage changing day care centers?