Migrate Parameter to Parameter - Free Case App for December 2012 (Updated)
"Have you ever needed to schedule an item of data that Revit would not let you? This is a common hurdle for many and now there's a free tool that you can use to get around this. Common uses include migrating Wall Base Constraint Element Names (Levels) into a schedulable parameter. I'm sure you guys will find lots of uses for this one."
This free add-in may be downloaded from the Case Apps website.
Update 5/8/2016: CASE and the CASE Apps website are no more but, courtesy of WeWork, the CASE Apps are now open source. They may be accessed on GitHub.