I'm here to help you sort this out, mariaville.
To start, let's check the Register if the transactions really exist. Then, ensure the status of the transactions is not reconciled (R). This could be the reason be the reason why they are not showing during reconciliation. I'll guide you how.
For more information about reconciliation, I suggest checking this article: Reconcile Workflow in QuickBooks.
Additionally, I've added an article that'll help what to do if a previously-reconciled transaction is no longer marked as reconciled in QuickBooks. This way, you'll be able to ensure your books are accurate: View Details for Missing Reconciliation Reports or Reconciled Transactions.
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