To get Accounting Data from Sage you need to be logged in into Sage. Then you need to select from the menu Extensions -> G-Accon for Sage Cloud Accounting -> Get Data from Sage and then select a accounting table/object (Accounts, Sales Invoice, Sales Quotes, Vendor Credit Nots, and ect. )
There are multiple accounting data you can select from the drop down box which allow you to create reusable templates for later on usage.
G-Accon for Sage Cloud Accounting also provides you with the ability to set up multiple optional settings to meet your business needs.