Setup two orgs (two ledgers) with one tax regime

 Hi Experts,

we have two orgs (10, 20) in Germany, each one has its own primary ledger.

I defined new tax accounts and subscribed LE and OU to the regime. 

Now what to do with factor sets, condition sets and tax rules?

Do I have to configure new FS and CS and add them to my old rules for DE VAT?

I have done the setup under global configuration owner, should I switch that for the second org?

Best regards,

Katharina