I need your help on a serious issue! Instead of deleting a single entry, I have deleted by mistake a whole category with many entries in it in the Codebook Windows application. Now, I need to undo this action but I cannot figure out how to resolve the issue. I am syncing the Codebook databases on my PC and my iPhone via my Dropbox account but of course for the time being I would not do it again as I am afraid that the category deletion will be replicated on my iPhone. Please tell me what can I do to recover the deleted entries!