Harmy said:
When you preview the menu in multiAVCHD, it shows only six tracks in that small box but that is only static preview with no actual functions, so I thought maybe, when you create the menu, it might actually scroll down to the others but I have yet to figure out a way to test this without actually creating and burning the whole disc.
Why don't you cut the mkv down to the first 5 minutes, call it Source and use that as the source when running the Bluray build?
When happy with the result, run the build on the full mkv renamed as Source.
The only difference between the two will be the number of chapter markers and the length/size.