How to use original game on RCPS3 or how to dump them in order to use with RCPS3

thanks.
I copied a couple of games and I'm looking for files like 666001 to be merged in every folder.
In God of war collection 2 I have this folder with 3 files:
https://i.postimg.cc/GmSwj2bV/merge1.png
I merge them in this way and I deleted the 3 spilletd file: https://i.postimg.cc/v8Wv7NQd/Merge2.png

Is it correct? In any case, i have to open all the folders/subfolders in order to find if are present files like 666001. If I don't find any file like this, it means that there aren't splitted files, is that correct?

many thanks!