Historical Balancing - Balance Sheet now not balancing

Good afternoon,

I was just re-organsing our chart of accounts in Myob Accountright, and added some header accounts.  (made no balance or $ changes).

I've gone back to the balance sheet to check the formatting, and a historical balancing amount has now appeared in our equity accounts, and has thrown the balance sheet out by this amount.

I've tried the advice from another post about choosing an account with a 0 balance and changing the opening balance by $1, closing and re-doing the same process back to zero to see if it will refresh the historical, however that hasn't had any effect.

Can you please assist me?

Thank you kindly

Kirra