Help with editing Demon Rune

[Mechanic]

Hello all. I need help on how to editing the Demon Rune properly. Here the pictures of what I did tried to editing the Demon Rune, and it is not working properly. I am using Retera's Model Editor.

Original Demon Rune (Retera's Model Editor)

Exporting the Demon Rune as BLP file.

Converting BLP to TGA for opening the file in GIMP. (WC3 Viewer)

Editing the Demon Rune in GIMP.

Exporting on the original file.

Converting TGA back to BLP for importing to map. (WC3 Viewer)

Replacing the texture for the edited Demon Rune texture from GIMP.

This is the problem I have now. I need help how to import it properly. Anyone?

 

[JB_McKnight]

Hmmm... if you're sure it's not the texture's fault (missing Alpha channel?) then it could be from your converter.

You can try using Magos' Model Editor to convert the texture, which is what I always use.
Through Magos:

1. Open the texure file through "File > Open"
2. Find the texture in the Texture window "Windows > Texture Manager"
3. Right Click your texture and export it into the desired format (it can do .tga, .blp, etc.)