Print merge with cyrillics

Hello people. I am new here and I would like to give some help and receive some help

I am struggling with a situation. I have to make imposition for 200.000 of pen(printing variables names on it) and i use print merge in corel. everything was very good until I discovered that I have a lot of names in cyrillics, bulgarian names. It works when I copy -paste them, but not when i am using print merge. Is here anyone who is able to tell me why? I cant do it manualy.

Thank you in advance.