[NTG-context] groupedcommand italic and upright (MkIV)

Hi, in MkII the slash became set upright, in MkIV it stays italic: \def\Textit{\groupedcommand\it\/} \def\Textmr{\groupedcommand\mr\/} \definetextmodediscretionary : {\prewordbreak\discretionary{\kern.05em\Textmr/}{}{\kern.05em\Textmr/}\kern.05em\prewordbreak}% ist schon Textmr = aufrecht ! \starttext test \Textit{non|:|italic} here. \stoptext What needs to be changed to get an upright slash in that italic group? Steffen