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Are there any other interesting aspects about the Wikipedia article for Serebro?
On 28 September, member Anastasia Karpova confirmed her planned departure from Serebro. A new member, named Dasha Shashina, was announced on 3 October 2013.
Why was Karpova replaced in the band Serebro?
Anastasia Karpova had told Maxim Fadeev months prior that she intended to leave the group. She noted that the decision was mutual with other members of the band.

Question: Why did she want to leave? Was it because of differences with others?
Self-contained rewrite: Why did Anastasia Karpova want to leave the band Serebro? Was it because of differences with others in the group?