Hi,
Ok, got it transfered to my private address and z_gettotalbalance shows it with proper amount.
Then sendmany - fromaddress must by that private address, right?
Yes. use sendmany , transfer from your z_address to your t_address .
The z_address should be the same as used in previous step.
(btw, come to BitcoinZ at slack, discord, or telegram. Our community is very active there, and you can get much faster support from there.)
Bruno