Syncronization between Mac and iPhone/iPad
On my Mac the Contact register (with name, phone number, e-mail address, etc.) has tripled for most contacts. This has happened some time ago, so those not trippled may be updated more recently,
On iPhone and iPad they do not show three times. If I update a contact on the Mac it shows immediately on the iPad and the iPhone, so they sees to be updated correctly through iCloud, but not syncronized.(since the contact appear 3 times on the Mac but only once on the iPhone/iPad
However, if I delete 2 of the 3 occurrences of the same contact on the Mac I sometimes loose the same contact on iPhone/iPad, and sometimes not.
Can anyone help me to solve the problem?
MacBook Pro (Retina, 13-inch, Late 2013), OS X Yosemite (10.10.3)