Export from Apple Photos to Lightroom Classic

Hi,

I've been exporting my Apple Photos (running out of space) as either via the normal Export function or the Export Original function but when importing into LrC they are not is order and some images are completely missing - though they are in Apple Photos.

The strangest thing is that when I select a range of images in Photos and drag them to a folder on the desktop the images retain their Date!

Any suggestions would be appreciated... but for now I am staring down large amounts of time comparing both libraries.