Ledger opening balances in ax2012

Hello,

We are going live with AX2012 and I'm looking for a way to bring in my ledger account opening balances. I've read some other posts about using a GL journal but I'd like the opening balances to display in the 'opening balance' column on the trial balance report. Is there a way to import the opening ledger account balances? We are not briging over any transactional data - just the ledger acccount opening balances. If not import, are GL journals the way to go? Do I need to create a "999999" dummy account for offset?

Thanks in advance!