Client IP and consequently geocoded data should be collected for this event data after migration.
[x] 1. Pick a schema to migrate
[x] 2. Create a new task to track this schema's migration
[x] 3. Create /analytics/legacy/landingpageimpression/current.yaml schema
[x] 4. Edit-protect the metawiki Schema page at https://meta.wikimedia.org/wiki/Schema:LandingPageImpression
[x] 5. Manually evolve the Hive table to use new schema
[x] 6. Add entry to wgEventStreams, wgEventLoggingStreamNames and wgEventLoggingSchemas in operations/mediwiki-config
[] 7. Once the legacy stream's data is fully produced through EventGate, switch to using Refine job that uses schema repo instead of meta.wm.org
[] 8. Edit the producer extension.json and set EventLoggingSchemas to the new schema URI
[] 9. Once the producer extension.json is fully deployed, edit wgEventLoggingSchemas in operations/mediawiki-config InitialiseSettings.php and remove the schema's entry.
[] 10. Mark the schema as migrated in the EventLogging Schema Migration Audit spreadsheet