I exported one catalog from LR3 and one catalog from LR4 on my other computer and ended up with twice the file size. I can only find one set of files but the disk space on my mac has been doubled. I exported both catalogs into Lr CC and it's working fine. What and where have I done wrong?
I have deleted Lr3 and 4 btw.
Also does anyone have any good tips on merging the to catalogs?
Your terminology is a little bit strange, so I'm not sure what you have done. You cannot export catalogs into Lightroom. If you have converted the old catalogs so that they are usable in Lightroom CC, then you could open your main Lightroom CC catalog and import from those other catalogs that you converted. After the import process is complete you can delete those old catalogs because you won't need them anymore.
Thanks for answering so quickly!
Sorry about the language.
I exported one catalog from Lr3 and one from Lr4. Then I imported both into Lr CC. I converted the files so they would be compatible with Lr CC.
The import worked fine but I tried to move the original catalog files to another location to see if I could delete the files. When I did that Lr CC says "image not found".
Do you know what it could be?