In the documentation for upgrading to SDL Tridion 2013 SP1, and specifically in the Upgrading the Content Manager Server -> Preparing for the Content Manager server upgrade section, there are instructions to rename the default TBB Parameter Schemas from "[name] Parameter Schema" to "[name]". So, taking the example from the documentation:
[...] you would rename the item Default Finish Actions Parameter Schema to Default Finish Actions.
This is a simple enough task and easy to accomplish, but my question is why the schemas need to be renamed? What's going on under the hood that necessitates the change?