How can I avoid problems during QuickBooks data migration?

https://quickbookhelpdesk.com/blog/quickbooks-data-migration-guide/

Prepare your records carefully, remove duplicate entries, create multiple backups, verify financial information before and after the transfer, compare reports, and test the migrated company file before resuming regular bookkeeping. Migrating data in QuickBooks is an important process that requires careful planning and attention to detail. Whether you are moving to a new computer, upgrading your accounting environment, or transferring company files, preparing your data beforehand greatly increases the chances of a successful migration.