Hiya mate,
This may hopefully be of some use to you:-
https://forum.videohelp.com/threads/377611-Burning-existing-BDMV-folders-on-a-mac
I think that might work? I will give it a try on weekend! As usual, the Yoda Master shines the light.
Ha - you won’t be saying that if it doesn’t work mate 😃 Many times I have failed!
Good luck with it 😃