When posting your transactions from Atlas to IntAcct, you will need to complete an additional step of selecting the correct Journal to which you want the transactions to flow. You can still follow all instructions to post transactions found in this article, and then select the Journal as well, as outlined below.
After loading the date range and IntAcct Accounting Package you would like to post, you will see the "Select a Journal" dropdown appear at the bottom of the screen. Click the dropdown, and choose a Journal. Ensure all entries in the data grid look correct, then click Post Transactions.
Again, see our Post Transactions article for more details on this screen.