Creditors Control Account shows a balance

Hello, I am having the same problem as this guy in this thread:

So I have 2 purchase invoices that were issued in one accounting year and paid in the next.
And so when I set the date 31 of March (2013/14 year end date) in Balance Sheet I get this amounts in the red column for nominal account 2100 Creditors Control Account.

Question is what should I do about it?

If you go into the Chart of Accounts and send the period to “All Time” the balance of the creditor control account is zero. If you query specific date ranges it may have a balance due to invoices being outstanding at that time.