Controversial figure skater Kamila Valieva is set to return to competition this weekend in Russia, but she is still facing a drug case.
The 15-year-old was eliminated from medal contention in the women's singles at the Winter Olympics.
She was allowed to compete despite a failed drugs test after she helped the Russian Olympic Committee win the team event.
The Channel One Cup will be held in Saransk.
The World Championships are clashing with the Russian event.
The World Championships in Montpellier, France, which run from Wednesday to Sunday, are not open to figure skaters from Russia and Belarus because of sanctions imposed after Russia's invasion of Ukraine.
One of the biggest stories to taint the Beijing Games was the case of Valieva. The teenager became the first woman to land a quadruple jump at a Winter Olympics when she achieved in the team event.
Just before the team event medal ceremony was due to take place, a failed drugs test by Valieva came to light.
She was allowed to compete in the singles after a court ruling lifted her ban.
The timing of the test result, which came during the Games and nearly six weeks after the sample was taken, was pointed out by the Court of Arbitration for Sport.
If Valieva were not allowed to compete, it would be anirreparable harm.
Valieva left the arena in tears after a number of stumbles and falls saw her drop from first place after the short programme to fourth following the free skate.
The case is still being worked on. The Russian anti-doping agency has six months from the date of Valieva's offence to reach a decision over any sanction. The ruling could be delayed until August.
The USA and Japan finished second and third in the team event, while Canada came fourth.