International ACH transactions (IAT) will show on the ACH Preprocessing report (on the 4th stream) and will not automatically post until marked to do so. After doing the appropriate OFAC check and making the decision to post, go to ACH Workspace/ACH Processing/Items.  Then, right click on the IAT and select Properties – ACH Hold.  On the ACH Hold tab, look for the new “Post Hold” field and change the response to blank.  The next time you run ACH processing this transaction will post automatically.