Losing DD 5.1 Audio during WTV to HEVC MKV conversion - Only outputting stereo

So for some reason my HEVC MKV conversion profile is causing the converted WTV file to lose it’s AC3 Audio Track and only have Stereo. I’ve double checked that Mult-Channel Audio is selected in the settings (along with choose the best audio track), so I am not sure what would be causing this. Could someone look over a Log File and see what I probably have setup wrong?

Here’s a link to my most recent conversion

Just to follow up…I updated the HEVC MKV profile to copy audio instead of whatever it was doing before and I still got the same result with only stereo in the converted Audio file.

   [HEVC MKV]
Description=HEVC in MKV (H.265/AC3) conversion. Creates a smaller file (50% smaller than H.264) with comparable quality but very slow.
order=handbrake,ffmpeg
ffmpeg-general=-threads 0
ffmpeg-video=-ss 0 -vf yadif=0:-1:1,hqdn3d -vcodec libx265 -preset medium -crf 18 -map 0:v -sn
ffmpeg-audio=-acodec copy -map 0:a
ffmpeg-audioac3=-acodec copy -map 0:a
ffmpeg-ext=.mkv
ffmpeg-audiodelay=skip
handbrake-general=--decomb --loose-anamorphic --verbose=2
handbrake-video=--start-at duration:0 -e x265 --encoder-preset medium -q 18
handbrake-audio=-E ffac3 -R auto -B 160 -D 0 -a 1,2,3,4,5
handbrake-audioac3=-E ffac3 -R auto -B 256 -D 0 -a 1,2,3,4,5
handbrake-ext=.mkv
handbrake-audiodelay=skip
PreConversionCommercialRemover=true

I didn’t touch anything in the Handbrake section of the profile so I am guessing that something is happening during the conversion to H.265 that is changing the audio track.

Any thoughts on this?

Here’s a copy of my most recent conversion

Your converted file (output) is showing 5.1 channel audio:

2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> Input #0, matroska,webm, from ‘C:\Program Files\MCEBuddy2x\working0\Archer_FXXPHD_2018_05_20_01_58_00.mkv’:
2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> Metadata:
2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> ENCODER : Lavf58.0.102
2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> Duration: 00:21:13.28, start: 0.000000, bitrate: 2344 kb/s
2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> Stream #0:0: Video: hevc (Main), yuv420p(tv, progressive), 1280x720 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 1k tbn, 59.94 tbc (default)
2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> Metadata:
2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> ENCODER : Lavc58.1.100 hevc_nvenc
2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> DURATION : 00:21:13.277000000
2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> Stream #0:1(eng): Audio: ac3, 48000 Hz, 5.1(side), fltp, 256 kb/s (default)
2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> Metadata:
2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> ENCODER : Lavc58.1.100 ac3
2018-10-11T07:16:53 MCEBuddy.AppWrapper.Base --> DURATION : 00:21:13.202000000