Modifying Recoverable tax account via Account Derivation Rule

 We wish to update the recoverable tax account at create accounting  time for an invoice. 

If we can  do this than we can increase tax accuracy by reducing the # of tax rate codes 

 I am attempting to  have an account derivation rule   to replace the recoverable tax account   with the  Balancing segment  from the invoice Line Type = Item  = Invoice Distribution account 

My situation -  my Liability account  is assuming the   Tax rate  Balancing Segment as well as the  liability  account from the  Supplier site. 

so my testing  is not  generating the   recoverable  Tax account   nor the updated  Liability account 

Background