We had about 750 contacts in WLM and then one day they suddenly duplicated to over 1400 contacts. I had to delete them one at a time and in so doing deleted some of the category entries even though there was one contact name left. I had to repopulate the categories.

Why would this happen? Is there any way of deleting the duplicates other than manually? Is there any way of backing up the category files (I now have a printed copy)?

With thanks for any help.

Edward Bake       WLM Version 2012 (Build 16.4.3528.0331) Windows 8.1 version 6.3 (build 9600)