🚀 go-pugleaf

I don't think this has anything to do with XML.

Did you export the main story -- the one that's threaded in multiple page -- to InCopy? (Do its frames show the InCopy "Available" icon?) And add that to the Assignment?

Click inside the main story and look at your Assignments palette. If the story was exported properly it'll be highlighted in the Assignments palette under the name of the Assignment. If nothing gets selected, you forgot to export this story to InCopy (or you did, but you forgot to add it to the Assignment ... it's still in the Unassigned Content category).

In InCopy (or InDesign) you only need to check out one frame of a threaded story ... all the threaded frames get checked out at the same time. Ditto for check in.

To see the full story and make edits to it in one window without having to jump to individual threaded frames in your document, use Story or Galley view in InCopy; or Story Editor in InDesign.

AM