Rollback is more than redistributing old code. New formats and key states may be incompatible with it.
Evaluation approach
Document compatibility and reversible migration limits. Assess server protocols with client data versions.
Application example
Returning from a new encryption format must not silently lose data or weaken protection.
Limits and considerations
Policy rollback and data-migration reversal are different operations.
Could rollback lose data?
Exercise recovery before release when formats change. Do not silently delete user data to resolve a protection problem.
Checks and decisions
- Version formats
- Test older releases
- Explain rollback limits
Sources
The primary references above provide the technical basis. Example workflows and evaluation suggestions are this publication’s explanations, not independent test results for a particular product.