Need to:

• Develop a job that can run through the exported data and import it to Relations
  • This depends on RHCLOUD-35455
• (Optionally) Export all necessary data (integration ID, org ID) from notifications in some sort order (this may warrant another column e.g. creation date)
  • Run the job above to import this data if done
• Within a maintenance window
  • export all remaining data from Notifications
    • This is all data if there was no prior export
    • If there was a prior export, this starts from after the last value of the sorted column in the previous export
  • Run the job to import all remaining data (starting from last value of the sorted column if there was a previous export / import)
  • Turn on writes to Kessel
    • From this point, writes to Kessel must remain on. If they are turned off, we have to run another migration.
    • This does NOT require reads/access checks to use Kessel–just writes. Those are two separate config/feature flags.