I want to relate two Company Customers, CompanyA is the parent of CompanyB each with their own Tax ID.  Right now, I see that you can:

• Create CompanyB as Other Address under CompanyA but they both have same Tax ID and CompanyB's customer type is 'Individual'
• Create CompanyB from the kanban view then set it as Individual, set parent to CompanyA, then set CompanyB as "Company".  Tax ID for CompanyB is readonly, cannot update or it can be updated but when saved value disappears.

What I want is to: Create CompanyB from Kanban as a Company, set CompanyA as parent and be able to set the TaxID of CompanyB different from the TaxID on CompanyA