I could not get an answer from ProSeries last year when I asked about this so I gave up.  Whenever I am attaching a pdf for the stock transactions to a 2021 return, I put the totals on the appropriate section of Form 8949, identify the brokerage name and account number on the description line, put "Various" for date acquired and "12/31/21" as the date sold.  I can't imagine IRS is going to have any problems with that since the detail of all transactions are attached and the totals are shown in the proper section of Form 8949 so tax is properly computed.