Do not hesitate posting in english.
In most cases, it's better than a non-technical translation.
Hello,
what’s your Photoshop and NVIDIA Plugin Version?
I use Photoshop CS6 with the Intel Texture Works Plugin for Photoshop.
Intel® Texture Works Plugin for Photoshop*
When your opening a .dds file I recommend not to load the mipmaps. Mipmaps easily can be recreated while saving your texture.
You should always load the transparency as an alpha channel or you probably lose some of your texture information.
Once Opened it should look like this:
Now you have your full texture including the alpha channel.
Alpha channel is used as blending information/heightmap. The brighter parts will be blended in bevor the darker parts. (smooth terrain-blending)
Saving as .dds I use the following settings on the intel tools:
They also provide a nice Preview of the result including the file-size after compression.
Hope this is helpful 
If you have any more questions feel free to ask.
- Raptor5
Thanks a lot! I use Photoshop 2020 and Nvidia Exporter Plugin - Open Link I'll do some testing and get back to you shortly 
Uh nice,
didn't know there is an new version of the NVIDIA Tools.
I'll try them as soon as I can
