This new zone re-uses a dungeon map from TSO. The following XML allows the old image to be used in the live-event version of the dungeon. It belongs in the Live Events category. The zone-in is off of The Chronoweave, just like all of the Portal to the Past dungeons.
Code:
<ImageStyle Name="live_dun_miragul_chronoportal_solo" displayname="Miragul's Madness [Solo]" zonerect="-120, -102, 159, 243">
<ImageFrame Source="images/maps/map_exp05_dun_miragul_shard.dds" SourceRect="0,0,436,506" />
</ImageStyle>
<ImageStyle Name="live_dun_miragul_chronoportal" displayname="Miragul's Madness [Heroic]" zonerect="-120, -102, 159, 243">
<ImageFrame Source="images/maps/map_exp05_dun_miragul_shard.dds" SourceRect="0,0,436,506" />
</ImageStyle>