I'm having the same problem, specifically with the 'new brokerage' platform. In 2018, I migrated my Vanguard investments to the 'new brokerage' platform, so in reporting 2018's tax information I must report dividends and interest from both the new and the old brokerage platform accounts. Although TurboTax finds the data from the old brokerage platform it is not finding the data from the new platform when I import from "Vanguard Brokerage'.
