I imported a Google CSV into Contacts but initially decided to not sync.
I just changed the option after making couple changes to a contact and then sync'd with Google. That part went fine.
I have an iphone and use an app to sync my contacts to my phone. I set it to display changes before syncing. When I did that it showed all my contacts were going to be changed on my phone because "Social media had changed" in Gmail.
I don't see any Social media settings in Gmail so I am wondering what VueMinder Pro may have changed behind the scenes in Gmail when it sync'd that would cause the other app to display that change.
I have emailed the developer of the app for clarification too.
I've decided to not do any more syncing to be on the safe side.