Hello colleagues.

Please, could someone advise me or has this happened to someone else?
I just got the Avatar: The Way of Water UHD disc. I did a mkv remux where I inserted sound and subtitles.
When listing media info, the sound has Dolby atmos 24bit.

The same thing when I do it in TSmuxer when composing a UHD disc, BDinfo tells me that it has Dolby Atmos 16bit.

Don't know what it could be?

The original disc has Dolby Atmos 24bit.

Could someone give me some advice?

thank you very much