The following example illustrates the problem:
----
\documentclass{article}
\usepackage[display]{texpower}
\begin{document}
\stepwise{%
\step{One-}%
\step{Two-}%
\step{Three-}%
\restep[\value{step}=0]{XXX-}% Try with 5 as well
\step{Four-}%
\step{Five-}%
\step{Six}
}
\end{document}
----
I think the problem is that the the activatefirst for the restep isn't stored seperately. To me this seems to be non-trivial to fix.
Regards,
Hans
PS! I know the example isn't very real, but it's very simple. A more realistic example is a \reswitch that changes from normal to higlighted text after some steps.