I'm afraid that's not something our user dictionary system supports at the moment, at least not if a dictionary is being created anew / reimported rather than just having its entries edited.
Your best bet would probably be to create a new category, search for (magnifying glass in Organize) / add all of your MoE-based cards to that category, delete the old MoE, install the new one, then remap (Edit / Batch) all of the cards in that category to the new dictionary.