In order to change the account that your Scheduled Transactions post to, you will first want to navigate to the list of Scheduled Transactions.
You can click on Settings at the bottom left of the open Sidebar and select “Payees, Schedules, and Rules”.
Or, navigate to View > Go to > “Payees, Schedules, and Rules”.
Once there, you can edit the details of the transaction by double clicking on the main transaction.
But to edit the “Posts To” account selection, you will want to click on the Date field as it appears to the right side of the Scheduled Transaction.
That should bring up a pop up window. Within which, you can change the Schedule, as well as the account to which the transaction is Posting to.