When I was working with LR Classic I must have changed to a different catalog or file. I am unable to see the photos that I was working with. The photos I am currently seeing are older. How do I get back to the catalog that contains my lastest work. As you can tell, I am not a computer nerd. Inaddition I am a really old guy. Any suggestions would be helpful. I assume Adobe does not have a telephone number to call for help.