The memoir class allows us to set the margin to use for marginnotes by \marginparmargin. If set to \marginparmargin{right} it should always appear in the right margin---even with twoside. But marginfix seems to reset this so that marginpars are always in the outer margin.
The
memoirclass allows us to set the margin to use for marginnotes by\marginparmargin. If set to\marginparmargin{right}it should always appear in the right margin---even withtwoside. Butmarginfixseems to reset this so that marginpars are always in the outer margin.