Cubik studio doesn't export JPM Files correctly

[AirPvPz]

Hey everybody. I was working on a head for Appa (Avatar TLA) and I first created an element with some textures . Then I wanted to add some voxels so I did. After I converted the voxels to elements and exported it into a JPM file, the voxels changed textures but the element I already had didnt. These 2 pictures show what it was like in Cubik and in Minecraft:

Then I took a look at the JPM file and saw that all the textures of the voxels where completely off. I changed every single one of them and then it looked okay but this cant be right, right?