Is it possible to change a revenue account on an element or revenue plan after revenue has been recognized?

We have a subscription item that is posting to our Recurring Cloud Software income account and now our FP&A department want it to hit Recurring Professional services. The plan is based on subscription events and has a monthly schedule that runs for two years that is posting to the Cloud Account. Under the old revenue recognition you could edit the revenue schedule and change the account but under a revenue plan the recognition account is greyed out. Is there a way to change the income account, or do we need to perform a reclass JE each month