Update and backdate production handover dates on product board

Exported handover items with shifted production dates cause misaligned builds and delayed materials. It backdates and aligns schedule fields so planners have accurate timelines before production.

Overview

When exported handover rows arrive with shifted dates, planners can’t trust the build schedule and materials get delayed. This keeps product and ops teams on a single, backdated timeline so production planning happens correctly within minutes, ahead of the next run.