How do I navigate to a group of previously imported photos? I want to change an export setting and export them again but I can't seem to go back and find them.
The Previous Import collection up at the top left of Library in the Catalog section will show the set of photos most recently imported, but as soon as you’ve done another import that collection updates to the new set.
I always import my photos into a separate folder so I can go back and find them, later.
You need to use some of the many organizing tools (keywords and other metadata) in Lightroom so that you can find the photos again at a future time.
After I asked the question I found, under the "folders" section to the left, I could click on a folder and it brought me to each of the folders I imported previously where I could see the folder's imported photos.