Last week I exchanged all the money from one T.Rowe mutual fund to another of my existing TRP funds. Interestingly, the last transaction was never received/posted by Quicken. For that single account - TRP would return a Quicken error, as if the account no longer existed.... vs just reporting a zero balance. BTW - I can still see the account listed (as zero) in my accounts at the TRP website.
I had to go to the T.Rowe website and find the last transaction history info for price & shares, and then add that transaction to Quicken. I checkmarked on "sell all shares", which zeroed the account, but wanted the entry to also contain the correct dollar amount of the last sell transaction.