Speaking about Mishin...
an interview of Elizaveta's former coach.
http://izvestiaur.ru/sport/10036501.html
She says 'someone helped' Liza to make a decision to leave her.
Apparently, after winning a euro's medal, head of rusfed Gorshkov called her coach Svetlana from the airport to tell her that Liza will be trained only by Mishin from now on.
After this, she was fired from her coaching position in Glazov and was unemployed for some time.
Her friends helped her during this hard time and she managed to move abroad.
About Elizaveta changing her SP music.
https://fsrussia.ru/intervyu/4473-videointervyu-elizavety-tuktamyshevoj-i-andreya-lazukina.html
She says they thought that viewers 'might not understand' the initial music choice (Drumming Song) and they've decided to change it to Oblivion of Piazolla.
She says the choreo went perfectly with the new music and that
they didn't change anything in the choreo (so it's just the music).
They kept 'the same old' style in her free, she feels comfortable with it and thinks since they're doing 2 3A in FS they shouldn't go for big changes.
The music change is so strange. Those two pieces have nothing in common, how did they manage to just substitute the music and keep the choreo?