Have you entered your opening balances (via your balance sheet from your past acctg system) as a journal entry?  Then you just go in and reconcile the beginning balance as your ending balance to clear it and change it to what it should be.

Resolution for 'acctg system issue: 'how do i enter my beginning balance on my bank reconciliation?' available: Yes.

The acctg system issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the acctg system issue yourself by looking for a resolution described in the article. If it is a complex acctg system issue or you are unable to solve the issue, you may contact us by clicking here or by using other acctg system support options.

For more information about resolving issues related to acctg system in Quickbooks/QBO or to get support for the issue 'how do i enter my beginning balance on my bank reconciliation?', click the link below: