I have already done that, albums were empty, I simply reassigned galleries to the albums. But now i face other problem – there are corrupt thumbnails in gallery settings..
oh guys.. it is obvious, but i was blind. As i am lazy person, i just copy/pasted shortcode from other site and changed number to 5 and thats was it. so now i can see content of the album right.
Unfortunately the thumbnail problem in gallery settings persists. Normally i would ignore it, but i have to see those thumbnails to write comments to photos..