Hi Jason,
Mapping is the most challenging part of the process, we try to label the fields to match what is in QuickBooks and also described what data is expected. To assist we have written support articles that you can find in the
Knowledge Base in the support portal that define the fields that can be mapped and a detailed description of what data is expected - on many of those articles you will also find annotated screen shots that label the fields so you get a better idea of where the data will appear once imported.
We will continue to try to make the mapping process easier and more transparent and welcome any ideas and suggestions that you think will improve the process.
Many thanks for your feedback.
Steve