ALL older cleared data in your checking account impacts the reconciliation because the opening balance is the sum of the prior cleared transactions.

If prior cleared transactions’ amounts are changes or they’re deleted, then your reconcile will not work until that’s fixed.

Resolution for 'account impacts issue: 'possible that old data is infecting reconciliation not related to any current amounts how to verify data' available: Yes.

The account impacts 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 account impacts issue yourself by looking for a resolution described in the article. If it is a complex account impacts issue or you are unable to solve the issue, you may contact us by clicking here or by using other account impacts support options.

For more information about resolving issues related to account impacts in Quickbooks/QBO or to get support for the issue 'possible that old data is infecting reconciliation not related to any current amounts how to verify data', click the link below: