It is not considered a sale. It is only classified as a sale once you sell the crypto to return it in reais. But even if you do, just withdraw it to another brokerage and sell it in dollars.

One question, gentlemen:
Is the conversion of Cryptos to USDT considered a "sale"? (Question about declarations and tax payments)
For example, if it is not, could we convert our profits into USDT and use the 35k exemption at BR brokerages...?