We use recurring tasks in Projects where every week, month, year etc

Some of our projects are greater than 10 years and we are unable to set a new due date because the difference between start date and due date is greater than 10 years.

As an example I have a task start date of 23/10/2015, if I now try to schedule the next due date for 23/11/2025 I get an error stating it cannot exceed 10 years. 

How can we work around this as we need to keep the original start state as this matches contract dates and is also used to age the project/task/client.

Any help will be greatly appreciated.