Contacts with "X-APPLE-OL-MAPPING-INFO:1" in some fields

In the Contacts app, some of my contacts (not all) have this text in some of their fields "X-APPLE-OL-MAPPING-INFO:1".

Sometimes it is at the end of the telephone number, sometimes it is after the name of the spouse of that contact and sometimes I see it in the "Note" field...

I manually removed it from all the affected contacts but I'd like to know if someone else had this problem and where does it came from !

Thx !