Complete documentation explaining WhatsApp Device Migration with LID/PN:
- What are LID and PN identifiers
- Why they exist (problem solved)
- How the system works (architecture)
- When to use LID vs PN
- Complete migration flow with diagrams
- Log examples and scenarios
- Technical implementation details
This serves as reference documentation for the auto-merge implementation.
https://claude.ai/code/session_01SoNUGBEWbJwWWws3F2fuzh
Claude