The following is no longer putting the “answer blank” in the right margin.

\define\ansblank{\inright{\getnumber[itemgroup:itemize]. \thinrule}} 
\setupitemgroup [itemize] [n, style=bold,right=\ansblank]

\starttext
\startitemize[n]
\item A question.
\stopitemize
\showframe
\stoptext

When I source context 2016.02.15 it works, but not with 2016.05.19. Thank you for any help on the new way.

Some background:
http://www.mail-archive.com/ntg-context%40ntg.nl/msg72108.html <http://www.mail-archive.com/ntg-context@ntg.nl/msg72108.html>