Here are the most important points in regards to what data is used in what way and which data is stored persistently on an external database:
Persistently stored data on an external database
the Atlassian Connect framework automatically tracks the Cloud-ID and instance url. This is not controllable on our side
we additionally persist the Cloud-ID and the transaction IDs that Atlassian attaches to migration requests to allow better status tracking for debugging as well as continuous operations for larger instances.
this is necessary to handle possible duplicate requests and cancellation requests
the transaction ID for a migration is deleted once the migration is successfully completed
Other customer generated data is non-persistently stored on external services only for the duration of the migration
issue data is loaded via a JQL query to specifically identify issues which have a Agile Hive hierarchy issue-link
this data is only non-persistently stored in RAM
this is necessary for the AHCMH app to transform the data from the on premise format to our Cloud app format and store it in the target Jira Cloud instance
this data is only ever accessed when migration requests from the Jira Cloud Migration Platform are sent to the ACHMH App
Some meta data is persistently logged for troubleshooting
total number of issues to migrate
number of issues migrated
IDs of migrated issues
error information from requests to the Jira Cloud instance
this data allows us to identify the scope and possible cause of issues that occurred during migration
this data is only accessed for error analysis and performance analysis