Victoria Bampton wrote in post #3453192
There are slightly more technical reasons than that, so it's not just a case of 'they don't think they should have to', but hopefully that will change some time in the future. In the meantime, the workaround works fairly well.
What I think they should do is still import them and show a thumbnail, but just not let you adjust them, and tell you why.
As I've said before.... How good is a DAM the doesn't M your DA's? I understand no videos, or multimedia files, but this is awfully short sighted in the terms of panos.
Photoshop Elements Catalog at least puts the images in the catalog (sometimes without thumbnails I think.) But at least I know they still exist, and I don't forget about them.