Hi there, thanks for the reply. I'll try and explain in a different way..
I have an initial form that uses a repeating table (firewall form.png) for the details of a firewall rule. initially only one row, but could potentially be any reasonable number (2, 4, 9, 13). Then I have a SP2013 workflow for approval of the request, that I would like to have the information from that repeating table displayed in for the approver to see. Following that approval, I want the workflow to parse and email the request to a different system, again containing all the information and rows from the original form. Unfortunately I can't figure out how to have the repeating table data from the original form pulled in as a secondary data source into the approval workflow/form, and assume I'll have the same problem when it comes to parsing and email the system to system email.
I did do some reading about posting the repeating table to another sharepoint list. and something else about maybe using XPathNavigator to parse the xml itself... but surely there must be a better/easier way. This seems like it would be a pretty common thing to do (analog being something like an expense form where there could be multiple lines added to a form, and then a separate workflow for a manager to view and approve those expense line items).
Hopefully that helps to explain it. Attached is the original submission form, then a sample of the xml posted to the SP list, and the approval form (not working, displaying merged information from the original form).