It looks like Go to field is tripping the OnObjectEnter trigger for that field.
I don't see any code that would prevent the script performed by this trigger from executing. There's an If step in that script that would seem to serve that purpose, but there's no code in the first script that modifies the value of that variable in order to keep it from executing.
I checked again and it's for sure triggering the m_Orders Script when I run the add_TriggerPurchaseOrders Script. There is no where in the add_Record_purchaseorder script that allows the m_Orders script to run after the New Record/Request is called as you can see in the screenshot I provided.
Can't seem to find anywhere where this is being triggered from. I looked at Startup Scripts and nothing there. Even if I click the New Record button at the top filemaker menu it will still run the m_Orders script.
I figured out what the problem was, looks like the tab order was placing the selection at the Orders tab which was activating the m_Orders script. I got the numbers removed in the tab format order and it's all fixed.
Thanks for your help.