Is the WBTF International Cup style of competition, with different levels, being eliminated?

No, The IBTF Nations Cup is very similar in concept to the WBTF International Cup Level A & B.

With the 2022 World Baton Twirling Championship, the IBTF is introducing a companion competition - the Nations Cup. It is designed as a Tier II competition for the development of athletes around the world - refer to the IBTF World Baton Twirling Championship Rulebook for a more complete description.