Bibliography sectioned

[Robert Blackstone <blackstone.robert@gmail.com>]

Dear all,

I am struggling with a sectioned Bibliography for a thesis. I think I may have found a, maybe not very elegant but workable, solution: 
I need three Bibliography sections: Books&Articles, Treatises and Music. I have a separate .bib-file for each (I use BibDesk but that is probably not relevant for my problem), of which I have ConTeXt create a .bbl-file. 
In the backmatter I include an unnumbered chapter, with three sections, in each of which I import its own .bbl-file and a file just containing all its \nocites. 
With \placepublications[criterium=local] it gives the desired result, but unfortunately only with mkii. 

It does not work with mkiv (of july 13 and earlier) and I need mkiv for the rest of the thesis.

The example given below works with mkii but not with mkiv (of july 13 and earlier). With mkiv the following happens:
With \placepublications[criterium=local] the sections remain empty. 
With \placepublications[criterium=text] only the first section contains data.
With \placepublications[criterium=all] all trhree sections contain data but the content of the previous sections is added to the next.
I also tried \placepublications[criterium=section] and placepublications[criterium=bysection] but sections remain empty.
 
What can I do to get it, sections with individual Bibliographies, working with mkiv?

Thanks in advance for any advice.

Robert Blackstone

---------------------------------------------------------------------------------------------------------------
\setuppublications[alternative=apa,sort=author]
\setuphead[chapter][number=no]
\setuphead[section][number=no]

\starttext 
\chapter{References}

\section{Articles, Books and Theses}

\setuppublicationlist[samplesize={Cam1},totalnumber=2]

\startpublication[k=Cunningham:2010vn,t=phdthesis,
a={{Cunningham}},y=2010,
n=12,s=Cun10]
\author[]{John}[J.]{}{Cunningham}
\title{{The Consort Music of William Lawes, 1602-1645}}
\pubyear{2010}
\pubname{Leeds University}
\stoppublication

\startpublication[k=Westrup:1960fk,t=article,
a={{Westrup}},y=1960,
n=9,s=Wes60]
\artauthor[]{J.~A.}[J.~A.]{}{Westrup}
\pubyear{1960}
\arttitle{Personal view: \quote{Words for Music}}
\journal{The Musical Times}
\volume{101~}
\issue{1430}
\pages{693-4}
\month{november}
\stoppublication

\nocite[Cunningham:2010vn]
\nocite[Westrup:1960fk]

\placepublications[criterium=local]

\section{Treatises}

\setuppublicationlist[samplesize={dTMB02},totalnumber=2]

\startpublication[k=Agostino-Agazzari:1607ek,t=book,
a={{Agazzari}},y=1607,
n=249,s=Aga07]
\author[]{Agostino}[A.]{}{Agazzari}
\pubyear{1607}
\title{Del suonare sopra il basso con tutti stromenti \& uso loro nel conserto}
\city{Siena}
\stoppublication

\startpublication[k=Artusi:1586df,t=book,
a={{Artusi}},y=1586,
n=262,s=Art86]
\author[]{Giovanni~Maria}[G.~M.]{}{Artusi}
\pubyear{1586}
\title{L'Arte del contrapunto ridotta in Tavole}
\city{Venetia}
\pubname{Giacomo Vincentini}
\stoppublication

\nocite[Agostino-Agazzari:1607ek]
\nocite[Artusi:1586df]

\placepublications[criterium=local]

\section{Music}

\setuppublicationlist[samplesize={Cam2},totalnumber=2]

\startpublication[k=:2015bh,t=manual,
a={:2015bh},y=,
n=1,s=:20]
\title{Lochamer Liederbuch {\em (mid 15\high{th} century)}}
\note{Facsimile Edition {\em Lochamer-Liederbuch: und das Fundamentum
  Organisandi} (Paumann), editor Konrad Ameln, B{\"a}renreiter, Kassel 1972}
\stoppublication

\startpublication[k=Piccioni:1610ly,t=book,
a={{Piccioni}},y=1610,
n=2,s=Pic10]
\author[]{Giovanni}[G.]{}{Piccioni}
\pubyear{1610}
\title{Concerti Ecclesiastici Di Giovanni Piccioni {\`a} Vna, {\`a} Due, {\`a}
  Tre, {\`a} Quattro, {\`a} Cinque, {\`a} Sei, {\`a} Sette, \& {\`a} Otto voci,
  Con il suo Basso seguito per l'Organo Nouamente posti in luce}
\city{Venice}
\stoppublication

\nocite[:2015bh]
\nocite[Piccioni:1610ly]

\placepublications[criterium=local]	

\stoptext 
----------------------------------------------------------------------------------------------------------------

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