When I use IEEEeqnarray subnumbering and the hyperref package, hyperrefs to the subnumbered equations work fine; but if I try to reference the group of equations, the label is not found.
Example document:
\documentclass[12pt]{report}
\usepackage{IEEEtrantools}
\usepackage{hyperref}
\begin{document}
When I create an IEEEeqnarray with subequation numbering and try to point back to the group of equations, the hyperrefs are broken.
\newpage
\begin{IEEEeqnarray}{rCl}\label{eqn:FirstParentLabel}
f(x) &=& 5x \IEEEyesnumber\IEEEyessubnumber\label{eqn:FirstSubeqnLabel}
\end{IEEEeqnarray}
\begin{IEEEeqnarray}{rCl}\IEEEyesnumber\label{eqn:SecondParentLabel}
g(x) &=& \pi \IEEEyesnumber\IEEEyessubnumber\label{eqn:SecondSubeqnLabel}
\end{IEEEeqnarray}
\begin{IEEEeqnarray}{rCl}
h(x) &=& 42 \IEEEyesnumber\label{eqn:ThirdParentLabel}\IEEEyessubnumber\label{eqn:ThirdSubeqnLabel}
\end{IEEEeqnarray}
\begin{IEEEeqnarray}{rCl}
k(x) &=& C \label{eqn:FourthLabel}
\end{IEEEeqnarray}
\newpage
References to subequations work: \ref{eqn:FirstSubeqnLabel},\ref{eqn:SecondSubeqnLabel}, and \ref{eqn:ThirdSubeqnLabel}. But references to groups of equations do not work: \ref{eqn:FirstParentLabel}, \ref{eqn:SecondParentLabel}, and \ref{eqn:ThirdParentLabel}. If I don't use subnumbering everything works fine: \ref{eqn:FourthLabel}.
\end{document}
I'm using TexLive 2012 and the most recent version of IEEEtrantools.sty. Compiler error messages are emitted: pdfTeX warning (dest): name{equation.0.0.3} ha s been referenced but does not exist, replaced by a fixed one
pdfTeX warning (dest): name{equation.0.0.2} has been referenced but does not ex ist, replaced by a fixed one
pdfTeX warning (dest): name{equation.0.0.1} has been referenced but does not ex ist, replaced by a fixed one
Any ideas why this would be? I can't think of any more permutations on the attempts shown above. Thanks!