This may be an iphone issue, and the problem isnt once I have imported that is the issue. When I go to import from my iphone 7+ and choose destination folder, the dialogue shows photos from all sorts of capture times mixed in together, even though I have clicked on by capture date. I then have to look carefully to choose the ones that are actually the most recent.
We're really sorry for all the trouble. Could you please share the screenshot of the source folder which you are selecting in Lightroom to import image?
Also, please check that your Lightroom version update to latest version (7.5).
Thanks for the screenshot. When you connect your iPhone to your machine and you look at the images, do they look sorted?