Freshservice new-gen project management has an option for you to easily move all your data from JIRA. If you are the account admin,
1. Please navigate to Admin -> Project Management --> JIRA Import section in your Freshservice instance.
2. Add the JIRA account URL, Admin Email and Admin API key -> Next
1. Use "https://" in your account url. Eg: https://acmeinc.atlassian.net/
2. Use an API key that belongs to an account admin. API key can be found at https://id.atlassian.com/manage/api-tokens
Once all your data has been imported, you will get an email confirmation.