Problem dump to rt3

I have working 2.015 rt2 so decided to move on rt3 . well. with script
to dump from rt2 i dont have problem, working nice, but cant dump it
to rt3 (finaly rt3 was working OK just empty)
problem was with import of global options, cant set principal … ,
when I somehow dump data to rt3 , they show up but all owner was set
to nobody.

any ideas what went wrong ?