In Part II - Determination of Reporting Status - If we always have sales or purchases in a quarter AND are over the threshold, would we always check the box in column 3 and check the box for yes in column 4? And, do we have to report a country if amount i

Yes, if you always have sales and purchases in a quarter in an amount over the threshold, you would check the box in column 3 and also check yes in column 4 for that particular transaction type. Data are rounded to the nearest thousands of dollars on the survey. If, for a particular transaction type, total receipts or payments in a particular country are less than $500, then round to 0.