1. Login to Online Check Writer and select Apps.
2. Click FreshBooks and click Connect; then, you will be redirected to the FreshBooks login page.
3. Sign in to your FreshBooks account using the credentials.
4. All companies associated with the account will be imported.

To import bills from FreshBooks, 

1. Go to Bill / To Pay.
2. Click Import Bills and select FreshBooks.
3. Choose the company and update Import Settings: select Time Span and Download Filter.
4. Click Start Importing.

To import invoices from FreshBooks, 

1. Go to Invoice from the Receivables bar.
2. Click Import Invoices and select FreshBooks.
3. Choose the company and update Import Settings: select Time Span and Download Filter.
4. Click Start Importing.