I was having the same problem. Kept looking for Merrill Edge on the brokerage list and not finding it, so I kept using Merrill (that was on the list) trying to import my Merrill's 1099-B into 2025 TurboTax. It kept giving me error. I just tried it again but this time I unchecked all boxes that were pre-checked automatically, then I only check the one account that I needed the import for and it worked!
