Update Payment Options

Good day,

We have a business requirement to update the Payment Options with the following attribute:
Account for Payment: Current selection is: At Payment Issue
and we need to update it to be: At payment issue and clearing (for clearance in cash management)

But we are facing the following warning:
You won't be able to change this option after the application records any accounting information for new transactions. (AP-810409)

What will be the consequences of updating this option as per the new requirements? and what is best practice to do the required changes?

Regards