I just spent a lot of time merging contacts from different sources (two Google accounts, Google+, Twitter, Facebook, Skype), and now my contact list looks somewhat clean for the first time in months. So far so good.
In the past, when I reset my phone (I'm a CyanogenMod user, so resetting my phone happens from time to time), I lost all info about merged contacts, which is really a pain. Is it possible to back up and restore this information somewhere, e.g. through an app?
edit: I did the merging in the stock contact manager of Ice Cream Sandwich (CM 9 alpha)