The Suggested Order is the amount suggested to order based off of your minimum, maximum, and reorder by values for each item. This is just a suggestion, so you can still adjust the amount by entering a correct number under the Current Order column.
The Current Order is the amount that will show up on the purchase order for that particular item. You can set this value manually. Any items that you set a Current Order value of "0" will not be added to that purchase order.