Turning on iCloud—iPhone photos have already been imported to Mac Photos—will my photos be duplicated?
I have over 20,000 photos on my iPhone and I have already imported them to Photos on my Mac Book laptop. (I plugged in my iPhone to my laptop and manually pressed import in my Photos app.) If I turn on iCloud, will the photos in my Photos app on my computer be uploaded to iCloud and be duplicated with the same photos that are on my iPhone?