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2022 TurtoTax still does not import 1099-B from Schwab if the account is a Company Sponsored Account which sits in an account called Equity Awards.  The 1099-B from a regular brokerage account is not an issue, which is embedded in the 1099 Composite & Year End Summary together with the 1099-DIV and 1099-INT.  

I suspect the format may have something to do with it.    Each 1099-B has its own format.  They look totally different.  Just a guess!