Trying to import from external hard drive to LR but previews in reverse order. never had this before.
What's the Lightroom version number that you are using?
A screenshot showing the problem would be helpful.
LR 6.1 When I load from HD to Lr it reverses the order of images not good for sequence shooting.
So it does. Never noticed that before, and I can't say if that is by design or a bug. Will need to wait for some input from Adobe on that.