The [Solo] and [Event Heroic I] zones use the same DDS file. So I'm only attaching one DDS and one JPG file. I chose "Overrealm" for the menu group.
Code:
<ImageStyle Name="exp20_dun_djinn_palace_03_solo" displayname="Vaashkaani: Every Which Way [Solo]" menugroup="Overrealm" zonerect="-486, 222, -341, 362" heightmin="-10.62" heightmax="-9.21">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_03_solo_0.dds" SourceRect="0,0,436,506" />
</ImageStyle>
<ImageStyle Name="exp20_dun_djinn_palace_03_easy" displayname="Vaashkaani: Every Which Way [Event Heroic I]" menugroup="Overrealm" zonerect="-486, 222, -341, 362" heightmin="-10.62" heightmax="-9.21">
<ImageFrame Source="images/maps/map_exp20_dun_djinn_palace_03_solo_0.dds" SourceRect="0,0,436,506" />
</ImageStyle>