Contacts contain a lot of important information about the people you love, the business connections you need, and the services you rely on. Keeping them safe is important. iCloud does a great job at syncing contacts between the Mac, iPhone, iPad, and iCloud.com, but it's not perfect. Sometimes sync goes bad and data gets lost. That's why it's always a good idea to make a manual backup of the contacts on your Mac and keep it someplace safe. Luckily, it's easy to do!
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