When remuxing a DVD with MakeMKV some additional tags are inserted:

Code:
ID in the original source medium         : 224 (0xE0)
Original source medium                   : DVD-Video
When using MKVToolNix on the file the tags are gone.
How can i reinsert these tags?
And does anyone know what the name is because i can't find it in:
Code:
mkvpropedit.exe" "file.mkv" --list-property-names
Extracting the tags before MKVToolNix using Mkvextract doesn't give me tags.

Thanks!