What are the steps to follow to reproduce your issue?

1. Navigate to Home > Settings > Users & Company (Menu) > Companies

2. List of companies: Company A, Company B...

3. Creation of company C -> OK

4. On the Company A form: Parent company = Company C

What is the current behavior you are observing?

1. The company Company A has as parent Company C

2. Company C has as a new branch Company A

What would be the expected behavior in this case?

1. Multi-company available with: Company A, Company B and Company C

2. Possibility of managing activities for these 3 companies (Invoicing, sales, projects, etc.)

3. Operational Consolidation Module