Contacts - why do I have duplicate iCloud entries
This situation has existed since I updated to one of the earlier versions of the Mac OS and setting up iCloud. I'm finally finding the time to correct an issue that has bugged me for awhile.
I sync my contacts via iCloud across my Mac, iPhone, and iPad. Somehow I ended up with 2 copies of my contacts in iCloud (I think). When I open Contacts on my Mac - not on my iPad or iPhone - I have 2 sets of contact folders on the left pane and almost all of my contacts are duplicated - not all but about 95% are.
I have been thinking I would just delete one of the iCloud folders but I am concerned that both of them will go away. Granted, the data is all backed up via Time Machine and could be recovered easily enough but it would be a pain to do.
Any ideas about deleting one of the folders and having the other email?
Another questions is, why would I have duplicates that only show up on my Mac and not on either of my IOS devices?
Thanks
Adrian
iMac, OS X Yosemite (10.10), (2)