When making a payment to an installment membership, the earned income balance is paid before the contributed income balance.
These should be paid down evenly. Example:
If we have a 1000 dollar membership paid over 5 200 dollar installments. Each installment should be distributed as such:
Earned Income: 40 Dollars
Contributed income: 160 Dollars
What we are seeing is that the full 200 dollars are paid towards earned income.