But I have a new problem, how can I view this edited video on my camera?
So glad the renaming suggestion worked!
As to viewing the edited video on the card, you need to set the camera to Playback mode. When the video is displayed on the LCD screen, follow the instructions in your manual as to how to play the video. Typically you just hit a toggle switch near the LCD to have the video play. I've never tried this with an edited video, however, so if it doesn't work I suggest you contact Sony tech support.