I'm currently revising a cleaned translated file.
What do you mean by "revising a cleaned file" in Studio? The Studio Editor always works with bilingual files, so it is not clear what you mean by this. Did you open the translated target? This would not lead you anywhere.
However, when I received uncleaned files to revise them the update didn't work and the file was distorted
What do you mean by "update"? Were you unable to update the TM? How did this show up? Did you get an error message? Which one? Can you "save as target"?