Not sure what you're saying. When you log in to your character (which is now on Unrest) are your maps not there?
The base UI files are shared amongst all characters using a particular install of EQ2, with each having a unique layout that is saved per character. So the fact that the servers merged shouldn't make EQ2MAP disappear, but maybe you need to load your old ui layout (using /load_uiconfig and selecting your character name under your old server) if it's your layout that is messed up.
Beyond that, I don't know what else to suggest since I'm not exactly sure what the problem is.
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