Main and Top Extents maps not maching in Vue

Hello,
Iam very much new to World Machine. Iam trying to make a mountain with high details in the top and mid level details overall. So I exported 2 height maps

  1. with close up top extent in the top region
  2. Whole mountain with moderate details as Main Extents.

When import these 2 maps into vue, the top region with top extent of the terrain is not maching to the main extents mountain.

How to match these high detailed extents and low details extents in view. What I was thinking is if both the extents come in their right place, I can do 2 renders and composite them, So the top region which is near to camera will have full details…

Please if any one can give me an idea how to go about this, please let me know, I will be grateful

Regards,
Ajay