Let's start at the beginning: Given that the balance should always be zero, what transactions, if any, should appear on the investment side?
If you mean "Cash Management Account", which would be any cash in your taxable brokerage account, WHY should it always be zero?
And, if you used the Q feature "Show Cash in a checking account", then any cash would appear in the pseudo-checking account that was created when you chose that option … and NO cash, or transactions representing cash, should appear in the brokerage account. They automatically get moved, by Q, into the checking account when downloaded.
SO, you're going to need to do a WHOLE LOT more explaining about your issue.
BTW, a Fidelity CMA is my primary checking account. And another is the primary checking account for my wife.
