# Titletoc and Titlesec in just some chapters

I have a twocolumn document and I should insert the minitoc in the first chapters with titlesec and titletoc. I read the answer to Customize minitoc; however, if I change the \titleformat before appendices, all the sections of the appendix chapters will appear within the last minitoc:

\documentclass{book}
\usepackage{titlesec}
\usepackage{titletoc}

\newcommand\partialtocname{\contentsname}
% depending on this boolean, \chapter will create or not a partial ToC
\newif\ifchapterwithtoc
\chapterwithtocfalse

\titleformat{\chapter}[display]
{\normalfont\huge\bfseries}{\chaptertitlename\ \thechapter}{20pt}{\Huge}
[\ifchapterwithtoc
\vspace*{2pc}\titlerule\vspace*{1pc}%
\startcontents\vbox{\Large\partialtocname}\vskip1ex
\printcontents{l}{1}{\setcounter{tocdepth}{1}}\vspace*{1pc}\titlerule%
\else\fi%
]

\titlecontents*{lsection}[0pt]
{\small\normalfont}{\thecontentslabel\space}{}
{,~\itshape\thecontentspage}[\space\textbullet\space][.]
\titlecontents*{lsubsection}[0pt]{}{}{}{}

\begin{document}

\frontmatter
\chapter*{Acknowledgements}
\chapter*{Preface}
\tableofcontents

\mainmatter
\chapterwithtoctrue

\chapter{Chapter One}
\section{Section One One}
\section{Section One Two}
\section{Section One Three}

\chapter{Chapter Two}
\section{Section Two One}
\section{Section Two Two}

\appendix
\chapterwithtocfalse

\chapter{Appenix One}
\section{Section A One}
\section{Section A Two}
\chapter{Appenix Two}
\section{Section B One}
\section{Section B Two}

\end{document}

Any suggestion?

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