I've been using CC and have had no issues. Still had the 5.7 link on my desktop and accidentally selected it. Made a collection of a couple hundred photos from several years of photos. I would like to keep it in CC and get rid of 5.7, any way to do that?
In Lightroom 5.7, right-click on the collection and select Export This Collection as a Catalog
In Lightroom CC, select File->Import from another Catalog