Non reversable mappings
While most of the RSS 1.0 modules are valid in RSS 2.0, few of these can be completely transported using the MetaWeblog APIs using only the instructions found in this RFC, due to a lack of description of how to handle things like attributes in namespaces, and elements with elements.
For now, I'll simply update my example based on the new RFC (as the encoding of source elements changed), and ask one question related to a core element:
Does XML RPC permit multiple members of a struct to have the same name?