Chiming in because I have the same issue with my reports. This solution does not work. When you merge accounts - all it does is move the transactions over and then deactivate the old account. It does not "go away" at all and still lives in reports forever.

Why are all the replies to these threads from Intuit employees the same? It should not be so difficult to simply show every ACTIVE account in a report, regardless of balance or ACTIVITY (ACTIVE is not the same as having ACTIVITY).