Here is my problem :
I edited pictures on a backup of my main catalogue, there is at least one full day of work, probably more.
I don't really know when i worked on the backup catalogue and when i worked on the main one (this is quite a huge catalogue and i probably switched a few times between both versions, due to different hard drives being connected, etc).
I'm desperately looking for a way to sync them, while keeping the most recent edit of each image (or creating virtual copies if it isn't possible), do you guys know how to do that? There is a lot of editing/tagging and littles stars at stake...
Thanks a lot