nik222 Have you seen the explanatory video already? I guess many thing will become clear when you do:
Each columnt shown number of duplicates of corresponding type. Such as number of duplicates that are placed in same folders as original files in this particular archive. And yes, if you press “Delete All” those exact files will get deleted, while keeping originals. But this will not affect duplicates of other types, which are mentioned in other lines, unless same files are duplicate of two kinds at the same time.