[6S.Maraz]

Dont forget there is a "read folder" and a "write folder".

The game saves to root\maps\map name, while it loads from root\files\maps\map name.

Most likely your changed map_h is in root\maps\map name.

If you created this directory first, of course ...
This is explained well in the readme that comes with the tool (nobody reads the readme, I know )

Maraz