How to update Due date on AR transaction

Summary:

Profile option 'AR_UPDATE_DUE_DATE' is set to Yes at site level.

However Due Date on the transaction in Collections is not updateable. Neither is the due date field on the Transaction form.

What am I missing?

We are using simple staged dunning and the requirement is to change assigned dunning status.

I would think changing the Due Date will have the desired effect.

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