Critical Fix:
- extract_global_campaign_reference() now accepts campaign_id parameter
- Always sets local_campaign_id to current campaign as fallback
- Prevents NULL local_campaign_id when no Global Campaign Reference exists
Root Cause:
- Assets without Global Campaign Reference had NULL local_campaign_id
- Caused derivatives to be linked to wrong campaigns
- Same asset in multiple campaigns would share tracking IDs incorrectly
Impact:
- Every asset now has proper local_campaign_id
- Derivatives correctly linked to their source campaign
- Fixes issue where C000001177 assets were showing as C000002098
Changes:
- database.py: Added campaign_id parameter with fallback logic
- a1_to_a2_box_uploader.py: Pass campaign_number to function
- a5_to_a6_download.py: Pass campaign_number to function
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