There are two types of content in OmegaWiki; there are the standard MediaWiki namespaces with the standard MediaWiki content and there is the OmegaWiki specific content. The specific content contain database records, they are the DefinedMeanings and Expressions.
As they are handled completely differently, it means that the functionality available to these types of data is different as well. Particularly the "move" functionality has given us problems in the past. This broken functionality has now been removed from the screens.