I've got some DNG that by mistake I converted with embedded raw all spread in my Lightroom catalog.
I want to discharge raw, so as Lightroom doesn't allow to sort files by size (whyyy?), the easier solution is to choose all DNGs and convert them again to DNG unchecking "embed raw".
My question is: will this procedure convert twice my image in lossy format resulting in a additional loss of quality or the already compressed image will be untouched?