You just created a sandbox for Jira Service Management and copied data from production. Which statement is definitely true?

When you copy data from production to a sandbox, the user permissions and groups are also copied.

This means that project admins from production can access and manage the same projects in the

sandbox. However, customers and agents from production cannot log into the same portals or

projects in the sandbox, because we disable app links, external email notifications, and integrations

with Bitbucket and Slack. Attachments and comments are also not copied to the sandbox, unless you

choose to copy with media files.

Reference = Manage product sandboxes, Copy data to sandbox