A1→A2 now looks up the opentext_id in master_assets for an M-prefixed record
from B1→B2 and stores it as global_master_tracking_id on the local asset record.
This provides traceability from local campaign assets back to their global master
without changing any existing workflow logic or DAM metadata.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
