Who I have the same questioned this topic

Upgrading from iPhone 6+ to iPhone 8+, did a full cloud backup first, then used Content Transfer app to copy all contacts and photos/vids to the new phone. However, I then looked for a "favorite" old photo of mine on the new phone and discovered it was NOT THERE, despite the fact that Content Transfer said it copied everything (I did it twice, just to make sure). The photo IS in the cloud backup. So, the old phone had 2257 photos (3 Favorites) but the new phone only has 2250 photos (2 Favorites).

So, my question is -- why did 7 photos NOT get transferred and how can I determine WHICH photos the other 6 are (I already know one)  so I can figure out how to manually transfer them.

Sounds like a bug in Content Transfer to me. Where is Verizon's QA department?