No problem.

So my only concern is why the BD structure isn't playing smoothly. Is there anything in my steps I should double-check?

1) Extract video and audio tracks using MKVExtractGUI.

2) Move files into tsmuxer, create chapter markers, output as Blu-Ray disc.

3) Build BD data in ImgBurn, set FileSystem to UDF, revision to 2.50, output as .ISO file.

I'm using the latest software versions except ImgBurn. I have v2.4.2.0 for that.

The next thing I was going to try is to convert my BD file structure in DVDFab or Toast 11 for Mac and make iso/image files with those.

Chewtobacca said:

Sorry. I misread (actually misquoted) your last statement. The answer should have been yes. (I meant the "no" to apply to the part about the frame-rate's still being 47.952.)