im having a strange problem:
im importing a dotXSI file and in the textured decal view the nonicon-texture is displayed properly
but when i apply a texture -no matter if i apply it to a single cluster, multiple clusters or the whole object after deleting the clusters- the UVs change weirldy
the texture editor is displaying the weird Uvs all the time

does anybody know how to get rid of this?

(i also tried using obj-format for the model but that didnt work either)

Are you using a different format for the texture you are trying to apply? (just an idea)

no, they are messed up when i click modify>texture>add>image even before i selected an image

Another wild idea; did you perhaps accidently misclicked/shortcut-used (not a word, I know) some sort of auto apply concerning UV's?

Try this.

Select your model
Hit 7 to bring up the render tree
Click on the Image Node
Hit Enter
In the PPG that pops up, go to texture projection and in the second drop down see which current UVs are listed

or

In the same PPG under the Image section, hit the new button and choose from file.

Other solutions could be to import the model and freeze its history, then select the new texture.
Duplicate the mesh, then apply your new texture, and use GATOR to copy over the original UVs from the duplicate to the modified mesh.

Or you could try my favorite trick, select all the polies of the object in question, do an extract polygons (delete) and see if the extracted mesh is correct.