Thread:Support/effects of changes in namespace

I'm a transator of Aragonese, and we want to translate the namespace FILE to "fichero" which is the correct translation (current namespace is Imachen, which is a translation of the previous "Image"). My concern now is whether a change in the name of this namespace will affect all the images which are currently linked by a Imachen:xxxx link. Should we change all the links immediately or it will keep compatibility. Is it possible to keep the double name (Imache:, Fichero:) within the wikis? Thanks!