missing distribution list

I set up a distribution list a while back have have been able to edit successfully since. Suddenly it has disappeared from the contact list so I can no longer edit it - but curiously it still appears on autofill so it must be there somewhere!  Could you help me find it please?  PS I have just created a new dist list and that has appeared in the contact list. 

The distribution list should be saved in Local Folders Contacts. If Local Folders are not visible, you can enable them in Menu > Tools > Settings > General > Show Local Folders.