Well, 193 of 250 contacts have been synced. The missing contacts doesnt contain any eye-catching parameters (picture, notes etc.) they are completely random. None of the contacts is in a group or in several adressbooks. It’s just one adressbook with 250 contacts, imported of course. Are there any known issues with ElCapitan?
Hey! 
Sorry for the late answer. Is there any error logs on your sync tool?
Hi, thank you for helping. Actually there are some error messages:
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But I’m not sure if they are related to the sync-problem.
