I seem to be able to move a class from one library to another but I cannot seem to copy one. From the doc's...

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To copy a class from one class library to another

In the Class Browser, open the source class library.

From the Tools menu, open a second instance of the Class Browser and select the destination library file.

In the source class library, select the class you want to copy, and then drag the Class Move icon picture located above the class list to the class icon picture in the destination library. The cursor appears with a plus sign when you are over the destination class icon.

In the dialog box that opens, choose Yes to move the class, No to copy the class, or Cancel to prevent changes to either library.
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