Tomas,
I mention this only because I don't use templates as well as for ease of updating to new version of NX where the old install directory might be removed. With that said, I'm not sure what you can/cannot do, but...
Is there a variable/default that controls the directory where NX looks for the templates? If so, should the OP consider putting his templates in a different location than the install directory and defining the templates location by editing the variable/default for template location(s)? If that's possible, it might make upgrades/new installs easier to deal with by changing a variable/default than copying/moving or possibly recreating template files every time he upgrades to a new version.
Tim Flater
NX Designer
NX 9.0.3.4 Win7 Pro x64 SP1
Intel Xeon 2.53 GHz 6GB RAM
NVIDIA Quadro 4000 2GB