For the Terminator, I would rip the BD to your hard drive, then use Tsmuxer to demux the video, then use Tsmuxer and open the correct playlist to get the chapters, unrar the audio you just downloaded, put all that info in a folder, then make a new one, open Tsmuxer again, add in the video, add in the PCM audio, and set to English, then click the Blu-ray tab and copy the chapters from the playlist in the custom chapters setting, click create Blu-ray and use the newly made folder as your new BD, then click mux.
wallah, and brand new BD with untouched video, chapters in retail position, and new audio.