In that case You have to do it manually copy/paste EDIdata from TA or create a temp processing rule in Prod(but it is not recommended playing in prod) to call your custom service that writes data to a file as soon TN receives it.
“In my existing service, maybe call a submit service and pass the data to be executed on the test IS instance”…you can use pub.client:http (post) in the existing service that routes data to QA TN instance http invoke (wm.tn:receive).
But this process sounds lit weird…
HTH,
RMG
#Integration-Server-and-ESB#webMethods#B2B-Integration