PA Preparers - question on forgiveness credit

[BCinSC]

Client has non-resident income from oil/gas partnerships taxable in PA. The forgiveness credit is calculating just on the PA partnership income. Should his other income (all out of state- wages, a little interest income and small rental loss) be included to calculate the credit? I cannot tell from the form's instsructions what exactly consititues "eligibility" income. Thanks for any guidance!

[taxit]

The out of state wages and interest income need to be included.