I have been trying to import data from Contacts in Sierra 10.12.5, exporting vcards from Contacts and using the vcard wizard to import them to Panorama. However, the vcard versions of Contacts does not seem to be fully compatible. The 3.0 version, which is what you get if you set 2.0 in Contacts' preferences, does a little better than the default 3.1 version. What I am missing is mailing addresses. This looks like a simple fix, so I wonder if anyone has a hint.
Or if anyone has a better way to share data with Contacts, I would really like to know that.