On my iPhone (iPhone 6 with iOS 9.3.4) I routinely use the "heart" tag to mark my favorite pictures. But, when I sync photos with the OSX Photos App (v 1.5) these tags are removed. In reality I only want to sync or keep these flagged photos. Which brings me to my question(s)
How can I keep the "heart" tags from my iPhone when downloading to the OSX Photos App?
An even better option would be to ONLY download heart-flagged photos if possible and to delete all no-flagged photos on the iPhone, but perhaps those are covered elsewhere.