Two is several? Because there are only two Russian
pairs competing for other countries and still training in Russia. There's also Daria Danilova, who trains in Russia. But her partner is Dutch, so they can't be called a 'Russian pair'. The other skaters originally from Russia all train abroad and skate with non-Russian partners: Nikita Volodin, who trains in and reps Germany with his German partner; Ioulia Chtchetinina, who trains in Germany and reps Poland with her Polish partner (and who previously represented both Switzerland and Hungary); Anastasia Golubeva, who trains in and reps Australia with her Australian partner; and Aleksandr Korovin who trains in the US and reps the Philippines with his Filipino-American partner.
None of which is anything new or unusual, as
@Karen-W said. In this same event, we have Deanna Stellato (an American now representing and training in Canada), Filippo Clerici (Italian repping Finland, while still training in Italy), and also Simioli/Zarbo, who were both from Italy and used to represent Italy when they started skating together.