Thanks for your timely response. Yes all 6 email addresses are IMAP. All 4 of my IOS Apple devices are signed in with the same Apple ID. The video was a nice refresher and reminder. My household has been Apple Mac users since the first egg in the 1970's and the original composer software for typesetting.
I did sign out and then back into iCloud on my iPad, as you suggested. Now the emails deleted on one device change from new to read states on the other device, the blue dot for new indicator is removed. If I sign out of the mail app and sign back in the deleted emails re gone.
So I guess that is the best fix at this time until the next update
Thanks again for your help