I’ve confirmed this is an issue on a fresh install of both 1.6.4 and 1.6.6. Data sent in either the mt_text_more or mt_excerpt fields via the MetaWeblog api is not saved to the database, nor is it returned when downloading posts if those fields are manually updated in the web admin.
Data sent in the description field, however, is saved and displayed, so I’m fairly sure this is not a problem with my configuration.
