This is from Step By Step: Microsoft SQL Server 2000 Analysis Services.
When you copy an object - such as a data source, a database, a cube, or a dimension - and attempt to paste the object back into the same container, Analysis Manager prompts for a new name. This is the only way to "rename" an object. Once you've copied and pasted the object, you can delete the original. If you want to "rename" a data source, you must do so before using it as the source for a cube or dimension.