This is still a problem on 13.2 when switching from G03 in G04 in one go (marking G04 for installation and G03 for uninstallation in YaST at the same time). I tried that now, and afterwards the link for nvidia.ko was missing (nvidia-uvm.ko was there though). Reinstalling the nvidia kmp's fixed that. Another aspect that was new now (and is specific to >=13.2): The libglx.so link pointed to Xorg's libglx instead of nvidia's afterwards, so OpenGL was still not working. I had to reinstall nvidia-glG04 as well.