VCF file to Gmail Contacts (via web browser). I exported each group individually, but this is probably not required - it seems that group membership is preserved when you import.
VFC format on a Mac via built-in Contacts (select all contacts > File > Export > Export vCard) Importing via dragging contact groups looked like it was working, but soon I discovered that it was skipping all data in custom contact fields that were not supported by Office 365 / Exchange.Īfter bunch of trial and error I eventually found a reliable way to import all contacts without loosing any data in custom fields: Unfortunately, neither of the buttons was responding and the only option left was to kill the Contacts app. Also, it would often show a message about a duplicate contact and prompt to skip, ignore, or cancel import. Contacts app was freezing, showing nonsensical error messages, crashing, etc.
Importing large number of individual contacts this way simply didn't work reliably enough. I initially tried to import on a Mac via built-in contacts app by simply dragging and dropping individual contacts or contact groups. Importing contacts proved to be a bit more complicated.