# Reconciliation Opening Balance Drift Check

Trace an opening balance change to changed or deleted reconciled items.

## Scope
Preparation and review only. No account action or professional decision.

## Inputs
Prior reconciliation report, current opening balance and changed-transaction list.

## Workflow
1. Record the prior closing balance.
2. Compare it to the current opening balance.
3. Match any gap to edited or deleted reconciled transactions.
4. Return the drift trace without undoing reconciliation.

## Output contract
prior_close | current_open | gap | changed_items | matched | undo_unproved

## Fictional acceptance test
Fictional prior close 5000 against current open 4960. The 40 gap matches one edited reconciled receipt; without that match the gap would stay unexplained.

## Review gates
Keep original values, source IDs and version dates. Unknown facts stay held. Use qualified review for hiring, legal and accounting conclusions. No send, share, sign-in, scheduling, ledger change or payment. Fictional contract review is not a live account compatibility test.

## Method source
https://quickbooks.intuit.com/learn-support/en-us/help-article/statement-reconciliation/fix-issues-accounts-reconciled-past-quickbooks/L8lx6PQQ5_US_en_US

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