As per business process, REM Planned orders are created with lead time scheduling and dispatched on CM25 planning table. Planned order production dates are getting updated as per scheduled dates. Backward scheduling has been used for planned order scheduling.
When REM confirmation has been posted for planned order, planned order consumption is happening and production dates are adjusted as per production quantity. When production dates are re-calculated production start date & time is remains unchanged but production end date & time is adjusted as per reduced planned order qty.
Is this standard SAP? Is it possible to adjust production start date / time and production end date /time should remain unchanged?