Due to Atlassian license restrictions, your existing account/license at MockFlow.com account cannot be merged or linked to MockFlow integrations with Atlassian JIRA or Confluence.
License note
Atlassian integrations and accounts created at MockFlow.com are separate from one another and require a specific license.
- MockFlow integrations with Atlassian require a separate license to be purchased and assigned based on your user count already available in your Atlassian account.
- A single MockFlow Team account is automatically created and linked with your Atlassian company (domain) account. This provides seamless sharing and opening of MockFlow projects from within Atlassian JIRA/confluence without an additional login.
You can try following the steps listed here - https://support.mockflow.com/article/86-how-copy-paste-between-wireframe-projects
