I believe, without the intention of being a prophet, that this measure is due to the potential increase of the currency when opening spot trading.

Binance mentions that withdrawals of the USUAL token will only be available from 12/19/2024 at 08:00 (BRT). This means that:

If you sell your USUAL on 12/18/2024, you will have the funds immediately available in another currency such as USDT, BTC, FDUSD or TRY, depending on the pair you sold in.

The withdrawal restriction mentioned is only for the USUAL token, not for the currencies you converted it into.

Therefore, if you convert the amount to BRL or another currency (such as USDT) on 12/18, you will be able to withdraw the converted amount normally (as long as withdrawals for that currency are active and without restriction).

In summary:

Withdrawal of USUAL directly: Only from 12/19.

Conversion to BRL or another currency: Can be done on 12/18, and withdrawals will be released for these currencies, according to Binance's general rules.

Pay attention to liquidity and conversion rates to ensure a good result when exchanging to another currency!