We have a main.pdf, and a cover image and a tex file. When we use texlive2013 to add the cover image and the contents of the tex file in the main pdf, the links in the main pdf breaks, in the sense the texts that were links are still coming in blue but they are not pointing to anything anymore, they are just normal texts.
Contents of the tex file:
\documentclass[a4paper,11pt]{article}
\usepackage{times,color,graphicx}
\usepackage[final]{pdfpages}
\renewcommand\familydefault{\sfdefault}
\definecolor{covergray}{gray}{0.5}
\usepackage[pdftex,%
pdfstartview=FitH,%
bookmarks=false,%
colorlinks=true,%
urlcolor=covergray%
]{hyperref}
\begin{document}
\thispagestyle{empty}%
\setcounter{page}{1}
\parindent=0pt\parskip=0.5pc
\begin{center}\bf
\vfill
\begin{center}
\frame{\includegraphics[height=1.0\hsize]{cover.jpg}}
\end{center}
\vfill
\color{covergray}
Some text
\href{http://www.google.com}{http://www.google.com}
\end{center}
\includepdf[pages=-]{main.pdf}
\end{document}