# Which Problems Are Solved
https://github.com/zitadel/zitadel/pull/8788 accidentally changed the
spelling of milestone types from PascalCase to snake_case. This breaks
systems where `milestone.pushed` events already exist.
# How the Problems Are Solved
- Use PascalCase again
- Prefix event types with v2. (Previous pushed event type was anyway
ignored).
- Create `milstones3` projection
# Additional Changes
None
# Additional Context
relates to #8788