Open Proud Clod
Open your scene.bin inside data/battle
Guard Scorpion is Monster #2 in scene 81. remember that.
The Dragon is monster #1 in scene 149
Go to scene 149
Enemy Management -> Copy Dragon
Go to scene 81
Enemy Management -> Paste into Slot 1 ( Monster 2 is slot 1 because monster 1 is slot 0 )
Go to Scene Data Management -> Animations/Formations -> Formation
In scene 81, the Guard Scorpion battle is the first Form. ( 0144 )
Now you manually copy the data from scene 149 ( Scene Data Management -> Animation/Formations -> Formation, Form 4 aka 0257 ) to the other form. ( This is easiest done by making a screencap of it or opening a second proud clod just for viewing. ) The exceptions to this is the data in:
Flags - Escape Counter - Next Battle and Background
This includes camera positions, formation ID and so forth ( only everything under the form tab, and only form the form ( 0144 ) of the guard scorpion
If you cant get this to work I'll take a look and maybe upload a working scene 81 when I have time