Export it into the ZIP and then un-zip it to your local disk.
In the extracted directory you'll find a file named export.xml. Find the name of the WSP and replace it and any other object you want to duplicate and at the bottom of the export.xml file you'll find all the file names included.
Then you need to open the directory where the files are located which is also included in the ZIP and rename the actual XSD file/s in there.
Lastly ZIP it back up so that export.xml resides in the root of the ZIP archive.
Go back to DataPower and Import it.
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Anders Wasén, Sr. Solutions Architect
IBM Champion, IBM DataPower Gateways, IBM Transformation Extender