I tried to use the Win7 IE 11 export function on my old computer and then use the import function on my Windows 10 IE Edge. I couldn't get it to work so I called Microsoft support. After lengthy discussion this afternoon, I was told it was not possible. Ok, I didn't believe them.

I started looking around in Windows Secrets and discovered that IE 11 resides on still resides in Windows 10. So I opened the Win 10 IE 11 and imported the favorites into the new IE 11 without issue. I then opened Edge and had it import IE favorites. Worked great!

Thanks Window Secrets for the great clue!