Problem with this setvectorup [0,0,1];

Hello,

I added over months new buildings to my Epoch Chernarus Map and used the variable setvectorup [0,0,1]; to set buildings even on uneven ground. This worked fine untill the last patch 1.0.4.2b.

All stuff I placed in the past is still even to the ground in my script!
New stuff I add with this variable only stays even until a restart in editor, then it's uneven again.
Even when I don't use this variable and set stuff it's even. After a restart uneven again.

That drives me mad and prevents...

Problem with this setvectorup [0,0,1];