Why does Lightroom create duplicate (xxx-2) images when uploading NEW images from my camera? In the import panel, on the right of the screen, I have asked that imports be copied to a specific folder I newly set up. I HAVE NOT asked for Lightroom to create duplicate images and I am uploading from one camera card and have NOT created duplicate images in camera, which I could do with my Canon 5D Mk4.
If you uncheck Don't Import Suspected Duplicates in the File Handling section during import LR is creates copies of already imported images. For that, it doesn't matter if you select a different folder to copy to.
The settings of the file naming in your camera can influence this as well. If the file numbering counter in your camera is reset or does overflow it generated files with similar filenames already taken.