I have a question on a kind of confusing IOE displacement...

I am ORD based (but live in DFW), and successfully traded a 2-day in ORD, for a 2-day in DFW (same days). Yesterday, I added a turn to the end of my DFW 2 day for 150%.

This afternoon, I was notified that I was displaced from my DFW 2-day (+OT) for IOE.

My questions are as follows:

1. Do I have any 'right' that when they add flying back to my schedule that it has to be in DFW, despite being ORD based? 11.E.1.j seems to indicate that they need to start me in DFW.

2. How do i make sure that I am pay protected for the OT?

3. If I were to decide to not be pay protected to the OT, does that mean I am only good on the last day till my original end time +3 hours?

Thanks for the guidance!