[Razor12911]

They have to be merged first bro, remember, a specific (de)compressing program specialises with its own files, once you start modifying the original archive, the program itself cannot extract the files inside or tell what happened to the original archive for it to start decompressing and then request another split, unless if the archive was splitted by the program itself then it knows how it did it. I've tried it before, the most success was with 7-Zip, to just extracted the splitted files but it only worked for the first split because that's where the header is located and the rest of the splits, it showed an error, "archive is damaged", with Freearc, it was a different story, couldn't even extract any of the splitted files, so yea, they definitely have to merged first, there isn't any other way.