Code:
<ImageStyle Name="enchanted_mini01" zonerect="338, -660, 424, -559" availablerect="331, -667, 431, -552" availablepriority="1">
<ImageFrame Name="imageFrame" Source="images/maps/map_enchanted_mini01_b.dds" SourceRect="0,0,436,506"/>
</ImageStyle>
<ImageStyle Name="enchanted_mini01" zonerect="47, -1169, 144, -1057" availablerect="40, -1175, 151, -1050" availablepriority="0">
<ImageFrame Name="imageFrame" Source="images/maps/map_enchanted_mini01_a.dds" SourceRect="0,0,436,506"/>
</ImageStyle>
D'oh, totally forgot:
Name="enchanted_mini01_0"
Name="enchanted_mini01_1"
That signals EQ2 that there are multiple maps for the zone.
Since the maps don't overlap, there should be no need to have the availablepriority set.