Hey Kirk,
So I downloaded Photo Mechanic Version 6.0, build 3023 (40f5885) hoping that it would resolve the problem, but sadly not.
Upon ingest, the memory card is still retaining some images on there, most notably ones that I have tagged for selection. I had two cameras both of which had their contents downloaded to my MacBook at half time of a sports fixture only for me to insert back in camera and see some images (not the entire lot) still residing on memory card.
Here is the specs of my equipment.
Nikon D5, Sony 32GB XQD Memory card
Image Type: Jpeg
Computer: MacBook Pro 2108 (2.9 GHz Intel Core i9, 32 GB 2400 MHz DDR4, Intel UHD Graphics 630 1536 MB)
Mac OS: MacOS Mojave Version 10.14.4 (18E226)
In addition to this I am noting that when I click 'Save to Folder' or 'copy to folder' and click on the three dots to select a folder, it is taking in the region of 9-12 seconds for the finder to appear. Most irregular!
Have also attached the Pm Zip file.
Any help welcomed.