Impossible generate invoice when order line tax has a child tax

This error happens due to commit 505dd0553344 on class InvoiceGenerate.java (copy payment schedule from order) and happens when:
1) Tax is summary leval and has child tax (not included on price)
2) Payment term has schedules (lines)

The problem is that pay schedule is copied from order to invoice, and the grand total is not including yet the child tax amount. After that, the grandtotal is adjusted and when preparing the invoice, the error is raisen because invoice grandtotal is not equal schedule total.

Steps to reproduce:

• Change 'Standard' tax to summary level in Tax Rate window

• Create new tax and select 'Standard' as parent tax

• Change Standard Price List, deselecting Price Includes Tax field.

• Create new payment term, ex: 60 days net. IMPORTANT: in the Net Days field, keep 0, and create only one line(schedule): Percentage:100% and Net Days: 60

• Create new standard sales order, and select the above new payment term.

• Create a line (ex: elm product) and select the "Standard' tax

• Complete order

• Try to generate invoice using process or form, and it raises an error related to Payment Schedule: "Error in payment schedule Check the payment schedule"