Larry, more detail on how I move them:
1. Plug in lighting cord into iPhone
2. Open photo app on Mac
3. Select photos on th iPhone, using the Photo app on the Mac
4. Download
5. Go into recently downloaded folder in photo app on Mac and edit, and drag into sorted folders
6. Mac saves them on the hard drive and uploads to iCloud
Again, my question is, if I selected photos to download from the iPhone to the Mac, is there a way to know if it’s a duplicate of a previously downloaded photo?
I do it this way, as opposed to just turning on iCloud on my phone as a way to allow me to edit and sort photos before just letting everything store to iCloud, taking up precious space. I already pay for extra storage which is nearing capacity.
Eric’s response may have addresses my question or at least how to fix it if I discover duplicates.
But unfortunately I have amassed 4,000 photos on my iPhone, probably several I have already downloaded but didn’t delete on my iPhone.