You’re right, MagicaVoxel doesn’t export the metallic, transparent nor emissive materials properties. I’ve listed the main differences between MagicaVoxel and Avoyd in our FAQ if you’re interested. Did you know you could try the free Avoyd demo to export your models to obj? It works the same as the full (paid) version.
Quick question, if I wanted to import a texture onto a voxel (or turn a small png texture into a block to build with) is that possible as well?
Do you mean having textures on blocks like in Minecraft? That’s not possible currently: textured voxels are not supported in Avoyd (nor MagicaVoxel). You can import images into Avoyd but each pixel becomes a single voxel with a uniform colour. Note that you can create the same effect as a texture by using many voxels.