Amortization Schedule for Prepaid Expenses

I am testing out the amortization schedules on bills in order to amortize the expense. On the bill, dated 1/1/18, I specific the expense account at software expense.  I then created an amortization template to straight line by even period.  I chose term source as transaction date (1/1/18).  The deferral account I chose as prepaid expense. I kept contra account blank. I put Target Account as Default.  I'm assuming this would make the target account the software expense account I had on the bill.  I did the amortization period as blank, since I put the amortization start and end date