When converting a Quicken data file to QuickBooks, some or no transaction data is converted.
If you converted your Quicken Home & Business data file to QuickBooks, your Estimates are converted into general journal entries in QuickBooks. The estimate information is present, but it does not appear as an estimate. You will need to re-create the journal entries as estimates and delete the journal entry that the conversion created. Visit Accounts Receivable 101 for the steps on how to create an Estimate.
If the conversion still does not work, contact Quicken support for further assistance