A cloud ledger migration fails for predictable reasons: incomplete historical data, unmatched opening balances, and bank feeds that don't reconcile to the penny on day one.
The fix is sequencing: lock the closing desktop balances, reconcile every account to a known date, then migrate — and validate the cloud opening balances against the desktop closing before any new transactions are entered.
We run migrations as a project, not a switch. The checklist is what stops a 'quick upgrade' from becoming a six-month reconciliation headache.