why does CBOE still listen variance futures on the SPX if its delisted?

[stochastix]

https://www.cboe.com/us/futures/market_statistics/final_settlement_prices/

VA - S&P 500 Variance (VA) Futures VA/J2 - 2022-04-14: 697.7853
VA/H2 - 2022-03-18: 451.1887
VA/G2 - 2022-02-18: 612.5992
VA/F2 - 2022-01-21: 327.6236