Please take a moment to double-check your previously reconciled transactions, @ghfmp.
You'll have to review each one by comparing it with your bank statement to ensure that no transactions are missing and that all entries are accurate.
If you find any discrepancies from October to March after your review, you'll need to create a transaction or make a journal entry to adjust the amount accordingly during reconciliation. After making this adjustment, you can do a mini reconciliation to reconcile the negative amount, then proceed with reconciling your April transactions.
However, please consult your accountant before making any journal entries to avoid complications or additional discrepancies. Only proceed if you are confident that all correct transactions are recorded in QuickBooks and that your entries are accurate.
For more information on fixing opening balance issues, please refer to this article: Fix beginning balance issues in QuickBooks Desktop.
After reconciling, you can run a reconciliation report to view details that can help you identify discrepancies and other issues.
Leave a comment below if you have any additional questions.