so the last version of a given brand/series/item wins? presumably if you're writing a series of Item/Series/Brand, where they're all in the same Brand/Series, then you'll be adding multiple ContentHierarchyAndBroadcasts for each Item, and overwriting the Brand / Series each time. Shouldn't there be some form of merging, or have I got completely the wrong end of the metaphorical stick-shaped object?