See this question and answers for all the info about PPAs. However the direct answer is as follows:
A PPA is not restricted to a particular release (like lucid, maverick etc). The same ppa normally contains versions for many distributions and this is the preferred way of migrating ppa's over to new distribution releases - where most of the effort is on the ppa owner.
So simply adding back the ppa to your sources list will make the maverick version of updates and new packages from the ppa available immediately to you. Of course, if the maintainer has not released versions for maverick yet, then these won't be available now, but as soon as these are posted they will be picked up "automagically" :-).
If you are not using
add-apt-repository or providing the apt-line to synaptic (which are both distribution neutral) and are directly editing files in
/etc/apt/sources.list.d or in synaptic, take care to replace any occurrence of the word