Voting info lost if changes made to node

Issue Summary

After enabling the Voting module and having it successfully tabulate sample votes, I went in to change the name of one of the nodes with a vote already attached to it. After saving the change, I went back to preview it and all the voting information/stars were gone. This would be a shame if a company on this site changes something about their entry (name, address ...), they will unforunately lose their (perhaps) hard-won positive rating....