Loss of DTS-HD and True-HD passthrough

Hi, I’ve been using Kodi in Openelec for over a year now. I’m using an Intel H55 motherboard connected to a Micromega MyDac as the primary audio output and HDMI to a Marantz AVR for the passthrough for movie soundtracks. I had it set for all Dolby Digital,TrueHD,DTS and DTS-HD to go through the passthrough. Today I watching a movie with a DTS-HD soundtrack and noticed the AVR displayed DTS as the soundtrack. Then I switched to a movie with a True-HD soundtrack and there was no passthrough. I then checked the Audio Output settings and the only options that now appear in passthrough are Dolby Digital and DTS. Also the line option for number of channels is now missing. I suspect this may be the problem as it needs to be set at 7.1 to HD Audio. Is there anyway to fix this without having to do a re-install?