Jira Cloud Migration assistant does not migrate status and priorities with a backslash in the name

Issue Summary

Jira Cloud Migration assistant does not migrate status and priorities with a backslash in the name.

Steps to Reproduce

1. Create a status in Jira Server / Data Center with a backslash '\' in the name. Lets call is XYZ\ABC
2. Attempt a migration with Jira Cloud Migration Assistant

Expected Results

Status is migrated to cloud without any issues.

Actual Results

Status is not migrated. We seen an error in the logs similar to

project-import We couldn't import Issue Status 'XZY\ABC'. Reason: IllegalStateException: Unable to create status: Errors: {name=A status with that name already exists, please enter a different name.}
Error Messages: [].

Workaround

Rename the status in the source Jira instance and remove the '\'