Hi @BBT,
What do you mean by “previously edited”? You’d like to filter out all images that have been edited or images that have been already processed (exported).
In the first case, there isn’t an option for that (and by the way it wouldn’t be that useful because as soon as you apply a correction on an image it will be marked as “edited”, but it doesn’t mean that you’re done with it yet…).
For the second scenario, in the filtering menu just select “Processed” to filter out all of your (already) exported images.
PS/ for the first scenario you could use the pick&reject or rate your pictures (for example for me 5 stars means “edit done, ready to export”)…In this case you would be able to filter them out easily.
Steven.