I upgraded from LR3 to LR5 and ona separate computer, copied all my images onto a separate new external and now want to upload to 5, but not all my images. Can I organize on my Lacie and them import them with complications?
Do you want complications? If you take the time to organize your images before you import them into Lightroom it will make life much simpler. I suggest using one master folder with a logical (for you) subfolder structure.