New dates for Work orders due to delay in Processing first order

Hi Experts ,

    I need some clarification on the Maintenance Order date rescheduling, due to a delay in processing the first order.

Say initially, based on the specified parameter into "Maintenance plan Scheduling parameters" tab, while doing IP10/IP30 system will create 12 orders (for 12 months, starting from 01.09.2015).

Now as per my knowledge, If there's a delay in completing the first order(due on 01.10.2015) , system will look for the values into Tolerance and Shift factor fields and determine the date for next order start date.

Here my quarry is, since system has already created 12 orders in advance (with planned dates) ,how and where the impact of delay could be seen on the upcoming orders??

How system will automatically create new dates for all orders , based on the no. of delay days from first order ?? Do I need to run IP10/IP30 again to get new dates ?? Please advise...this part is not clear to me ..

Thanks ..