I have a series of photos taken over the space of a year. I have been keeping these in a Collection in Lightroom. As the project draws to an end I have found that there are some photos that are missing from that collection. So, I am trying to identify the gaps in these to search for the images. What I would like to be able to do is extract data from the collections list in the form of photo id, date etc. so that I can identify the missing dates and look for the images. Can anyone suggest a way to do this or another way to tackle the issue. Thank-you.