Walkthrough tips, Discussion of Campaigns [Heroes 5]

I understand that my question might not be entirely relevant to the topic, but I couldn't find a more suitable place to ask. Is the fact that Railag is a slightly modified version of Agrail (in terms of the name) a deliberate design choice, or did the developers simply have trouble coming up with a new name? I haven't completed all the campaigns yet, so there might be some storyline behind it...