Hi Jeff,
The best way to do these is to use the RapidStart function, that allows you to generate a template of the tables you want to migrate with the fields you want.
In the search box type "RapidStart"
Create a new Configuration package or use one just created.
Inside the configuration package add the table number 15 "G/L Account"
Then you can select the fields you want to import.
Export the template
Fill the excel with the data
Import the excel
I hope I have solved your doubt
Kind Regards