Originally Posted by wenywen
This may be a noob problem. Recently I have noticed that when I bulk convert ebooks, instead of choosing the import format based on the order indicated by 'Preferred input format order' under Behavior in Preferences; it is using whatever the format of the book was when it was orginally added to the calibre library. Am I missing a setting? or is this a bug that has been introduced during a recent update?
There is another option that is inherited from previous conversions
There is a tick box in at the TOP of Bulk convert, to ignore this (and use current preferences)