suftesi collection 2

il meccanismo label ref non mi funziona
ecco un esempio minimo

`
% !TeX program =xelatex
% !TeX encoding = UTF-8
% !TeX spellcheck = it_IT
% !TeX root = test.tex
\documentclass[draftdate=true,oneside,documentstructure=collection,crop=false,pagelayout=standard ]{suftesi}
\usepackage{epigraph}
\usepackage{ifxetex}
\ifxetex
\usepackage{fontspec}
\setmainfont[Ligatures=TeX,Numbers=OldStyle]{Junicode}
%\setmainfont{Lexia}
\usepackage{polyglossia}
\setmainlanguage{italian}
\PolyglossiaSetup{italian}{indentfirst=false}
%\setotherlanguages{english}
\else
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
%\usepackage[english, italian]{babel}
\usepackage[italian]{babel}
\fi
\makeatletter
\def\SUF@versionstring{\texttt{Versione del \today}}
\makeatother
%\title{\textbf{{\LARGE R}}assegna\xheadbreak \textbf{{\LARGE S}}tampa}
%\author{Claudio Duchi}
\collectiontitle{La vita di topolino}
\collectioneditor{Paperino}
\date{\today}
\newcommand{\datapub}[1]{\null\vspace*{-3cm}
\begin{center}
#1
\end{center}
\vspace*{0.3cm}\null}

\listfiles
\begin{document}
\frontmatter
%\begin{center}
% \frontispiece
%\end{center}
%
%\tableofcontents
\mainmatter
\includeart{test1}
\includeart{test2}
\backmatter

\end{document}

`
test1.tex
`
\author{Pippo}
\title{Test 1}
\label{cha:test1}

\maketitle
\datapub{28 novembre 2013}

come scritto in\ref{cha:test2}
`
test2.tex
`
\author{Pluto}
\title{Test2}
\label{cha:test2}

\maketitle
\datapub{28 dicembre 2013}
come scritto in\ref{cha:test1}
`
Nessun errore ma non appaiono i riferimenti
ciao
claudio