I am uploading a test SKU to learn the bulk template upload, and I'm having an issue I cant figure out.

- All of my variation child SKUs have the same main image

- My image is uploaded to my web server, and meets all of the image requirements ( it works fine when listing this image on a SKU manually on seller central)

So in the spreadsheet the same image URL is pasted in for every child SKU the same in the main image column. Yet 3 of 5 of the child SKUs say they are missing a main image? How can this be when the exact URL is being used on all 5?

Any help would be appreciated.

Thanks