Premature racking is a sure-fire way to set up a stalled ferment. Depending on the yeast and your OG you could be done, or still a way to go to finished fermenting. The fact that you were still showing some signs of fermentation before racking suggests to me that you might have still been going -- airlock activity is not always the best indication of fermentation activity, but with a stable temp, it suggests continued yeast work.
What you can learn from this is that primary is for fermentation...generally I wouldn't rack until you have reached terminal gravity, and the best way to tell that is to see that you have stable gravity readings over the course of a week or so.