Getting project key conflicts in jira migration

[Veerla, Siva Kedari]

Getting project key conflicts in jira migration even the key and the project name is different in both source and target instance.

[Dave Mathijs]

Hi @Veerla, Siva Kedari Welcome to the Atlassian Community!

If the Project Key was renamed in Server/Data Center, the old project key might still be referenced in the database of the source instance (Server/DC) and conflict with the target instance (Cloud).

Are you migrating Server/DC projects to an existing Cloud instance?

[Veerla, Siva Kedari]

Hi @Dave Mathijs 

Thanks for the reply, Yes we are migrating from Server to Existing Cloud instance.

If the old project key still be referenced in the database of the source instance (Server), how we will proceed.