Thanks for the reply to your 1st query.
As for your 2nd query, i did testing on Sandbox (all above) but the data was not the same, so I need to give you the live scenario as on Production Server:
The Cycle/Unit as per tcode IP02 is 30 Months
The IP10 for this Maintenance Plan shows the following:
Order for 15.06.2013 has already been created. User requirement is that they want to delay thisOrder for next 6 months only i.e they want the Order to be created automatically after 6 months then the Cycle/Unit of 30 Months shall continue.
All the above is that the History should be maintained and also the KPIs should not be effected as showing an Overdue job.
BR
Faisal