Am seeking to have frontmatter pages in roman numerals and from Chapter 1 onwards in arabic numerals. I have achieved something of the kind, but page 1 (arabic) is appearing on the last page of the frontmatter and not the first page of Chapter 1. I do not know why this is happening. My setup for page numbering is as follows (something I found somewhere - wiki? elsewhere? Not sure. I didn't make it up!):

\definestructureconversionset[frontpart:pagenumber][][romannumerals]
\definestructureconversionset[bodypart:pagenumber] [][numbers]
\startsectionblockenvironment[frontpart]
\setupuserpagenumber[numberconversion=romannumerals]
\setuplist[chapter][pageconversionset=pagenumber]
\setuppagenumber[number=1]
\stopsectionblockenvironment

\startsectionblockenvironment[bodypart]
\setuppagenumber[number=1]
\stopsectionblockenvironment

The frontmatter is some 16 pages worth (ends on a verso page but that verso carries the arabic number 1 instead of page xvi which it should be, since the final paragraph on that page ends with \stopfrontmatter. That means Chapter 1 (immediately after \startbodymatter) is now page 2 instead of page 1!

I tried a slightly simpler version of the above which I found on Stackexchange:

\definestructureconversionset [frontpart:pagenumber] [] [romannumerals]


\startsectionblockenvironment [bodypart]

  \setcounter [userpage] [1]
\stopsectionblockenvironment

but it gave me the same result. Any idea how I can get the correct result?

Julian