I'm assuming you are using the official (regular) autoupdater.
First: Is that giving you any errors? If not, then the maps are downloading fine.
What you may be seeing in-game is a bug where the map does not load properly. To force it to load properly, open the map and minimap at the same time. (You must be inside the zone at the time, of course).
If the updater is giving you errors, please report them here.
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