Hi Jim,
To get this flow for optional fields, you need to have the identical respective field titles. So the Text 1 title needs to be same for OE and AR batch optional fields. And Text 2 needs to be the same in both, and Text 3, and so on. You cannot match say Optional Text 1 in OE to Optional Batch Text 3 in AR - it must be 1 with 1, 2 with 2 and 3 with 3.
I tried it out and all 9 optional fields do correctly send the information, provided the titles match, including capitalization.
This was good to hear and very encouraging so I could solve some data flow items I need. Now, if only I could duplicate what you did. Alas, I cannot. I do not know why the first Text field goes over to AR but the other 4 I setup do not. The titles match exactly.
I give up. I guess I give my consultant a call.