Weird news: Couple decide to donate baby to natural parents

Consider the case when a couple has gone in for in vitro fertilization treatment at a fertility clinic, and a few days are told that the operation is smooth, and successful; and that the lady is pregnant. However, there is one problem. Inspite of the fact that the operation went through smoothly, there is one glitch, the baby that was implanted was not in fact theirs due to an error. What do you do in a case like this ? You can rant and rave, but in the end, you need to decide something.
The couple did finally take a decision, where they decided that they would give the baby to the couple who were the genetic parents, and now, that time has come, since the baby was delivered a couple of days ago. Read more about it at this article.