Why does third party billing import not create a stream for fee payments?

Hi,

We import property tax information from third party and are using third party billing import to bill it in addition to Property tax Admin fee. It seems Third party billing import program creates a stream element for actual property tax and does an entry into okl_trx_ar_invoices_b for fee payments (anything other than Actual property tax). As a result, sometimes if lease billing is not ran on same day, we end up generating 2 different invoices for Property Tax & Property Tax Admin Fee.

Is there a way to resolve this? What would be the impact if we create a stream element for Admin fee as well?