OK, I’ve just pushed what I think is a fix for this issue - at least it seems to handle your data OK now. It’s currently awaiting review, but even then it won’t make it to
master until the next release, which could be a few weeks/months away.
Note that it’s currently on our development branch, so using it means you’ll be using code that might differ somewhat from
master. Assuming you’d rather keep your main install as-is, you can set up another parallel install of MRtrix3 alongside your current one, and use that just to convert your data:
git clone https://github.com/MRtrix3/mrtrix3.git ~/mrtrix3_dev
You can then invoke commands from that version by providing the full path to the executables, for example:
~/mrtrix3_dev/bin/mrconvert hardi_mb2.dcm dwi.mif
Let me know if that works for you.