The UG says:

A operations: does not change magnetization, kept
C operations: changes magnetization somehow, discarded
B operations: "inverts" magnetization. When originally inversion symmetry is present, this type is kept, otherwise also discarded.

Magnetization is defined as axial vector (see UG), so you have to check the behaviour of the "induced current loop" under the sym.op.

I cannot say at the moment for sure what that means for a particular (odd m) orbital momentum contribution, but guess what you are saying is correct.

On 05/19/2016 05:42 PM, Laurence Marks wrote:
When in the symmetso section of the user guide the term "reverse the
magnetisation" is used for a particular symmetry operation, does this
mean that this symmetry operation would reverse the orbital angular
moment for m odd for the user specified direction, and then the sense of
the magnetisation with spin-orbit coupling is reversed (if needed) in
order to preserve the symmetry?

Professor Laurence Marks
"Research is to see what everybody else has seen, and to think what
nobody else has thought", Albert Szent-Gyorgi <> ;
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Co-Editor, Acta Cryst A

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