I have been using biber/biblatex for a while now and I was used to define multiple citations with defbibentryset and the subentry option for biblatex. This worked nice but since the last update I have a problem with how references are ordered. For example if I define 3 \defbibenetryset they are numbered from 1 to 3 in the bibliography no matter if there are other single citations between them. In order to check this problem I compiled again an old file that worked, but it is not working any more:
\documentclass[a4paper, 10pt]{article} %environnement du document
\usepackage[latin1]{inputenc}
\usepackage[T1]{fontenc} %prise en charge des caractères spéciaux
\usepackage[frenchb]{babel} %langue
\usepackage{epstopdf}
\usepackage{csquotes} %pour la biblio
\usepackage[backend=biber,style=chem-acs,subentry,maxnames=20]{biblatex} %style acs
\bibliography{library}
\uchyph=0
%pour réussir à faire des notes de bas de page
\makeatletter
\ExecuteBibliographyOptions{citetracker,sorting=none}
\DeclareCiteCommand{\notefullcite}[\mkbibbrackets]
{\usebibmacro{cite:init}%
\usebibmacro{prenote}}
{\usebibmacro{citeindex}%
\usebibmacro{notefullcite}%
\usebibmacro{cite:comp}}
{}
{\usebibmacro{cite:dump}%
\usebibmacro{postnote}}
\newbibmacro*{notefullcite}{%
\ifciteseen
{}
{\footnotetext[\thefield{labelnumber}]{%
\usedriver{}{\thefield{entrytype}}.}}}
\DeclareCiteCommand{\superfullcite}[\cbx@superscript]%
{\usebibmacro{cite:init}%
\let\multicitedelim=\supercitedelim
\iffieldundef{prenote}
{}
{\BibliographyWarning{Ignoring prenote argument}}%
\iffieldundef{postnote}
{}
{\BibliographyWarning{Ignoring postnote argument}}}
{\usebibmacro{citeindex}%
\usebibmacro{superfullcite}%
\usebibmacro{cite:comp}}
{}
{\usebibmacro{cite:dump}}
\newbibmacro*{superfullcite}{%
\ifciteseen
{}
{\xappto\cbx@citehook{%
\noexpand\footnotetext[\thefield{labelnumber}]{%
\fullcite{\thefield{entrykey}}.}}}}
\newrobustcmd{\cbx@superscript}[1]{%
\mkbibsuperscript{#1}%
\cbx@citehook
\global\let\cbx@citehook=\empty}
\let\cbx@citehook=\empty
\makeatother
\DefineBibliographyExtras{french}{\restorecommand\mkbibnamelast}
\begin{document}
\defbibentryset{metarev}{Furstner2000,Roy2000}
a\superfullcite{metarev}\\
a\superfullcite{Schwab1995}\\
a\superfullcite{Scholl1999}\\
\defbibentryset{hov}{Kingsbury1999,Garber2000}
a\superfullcite{hov} \\
a\superfullcite{Grela2002} \\
\end{document}
the output should be ref1, ref2, ref3, ref4, ref5 in the bibliography, but it gives ref1, ref3, ref4, ref2, ref5. The set=hov is numbered 2!!!
cheers
