Created Duplicate In Local And Won't Upload To Cloud

Hello,

I edited photos in local folders using Lightroom (not classic). As part of that editing process, I created duplicates of 12 images to have a black and white version and a color version (most other edits are the same).  

I did this by right clicking on the image and clicking “Duplicate 1 photo”. (Create Virtual Copy or any other option is not possible)

I am now trying to upload these 24 images (the “original” 12 in color and the “duplicated” 12 in B&W) to a folder in Lightroom Cloud - and I am receiving an error - “12 photos were not added for the following reasons - duplicate items within session”

The 12 that won’t upload are the B&W versions (e.g. the color versions, the “originals” upload).  

I have tried to change the time, change the flag color, etc. Nothing works. 

Is there anyway to fix this?
Should I have done these “duplicate” edits some other way?

Thanks in advance.