Thanks for using Outlook.com and for taking the time to provide feedback on the product. We’re currently looking into how we can improve the contact management issues that you’ve reported.Kenneth Mcloone commented
Under the old Hotmail system I could look at all my contacts and edit them if necessary. For example, someone sends me a change in their email address. Now I do not believe I can delete the old contact info. So, if I email this person in a few months I have to remember which of two suggested contacts to use.