Is the previous year's "closing balance" that you want for a P&L account, and if so, do you want the amount to be the ending balance in the account or $0.00?
You can find the values and fiscal ranges for every possible code by opening the "SuperSpec" (File | Open Template) and locating the one you need. You can place the string {n} in front of any code to get the value for a prior year (n).
You are likely to want: