The XML Design Input Report seems to be very similar to a Pre-Ss3/4 IRD file. Since it is now possible to import an IRD to build a Corridor, please consider adding the capability to import one of these XML files.
I am still learning Ss4 Corridors, but I am getting mildly corrupted files pretty regularly. None of my corridors allow me to open the Corridor Objects dialog box and I have had many orphaned graphics added to my files during an iterative design process. Some of these could not be deleted, forcing me to rebuild my corridor from scratch, using the report output as guidance. And fairly early in the process, new orphaned graphics began appearing (thankfully, these were not locked from being deleted) and the Corridor Objects dialog box was once again unavailable as it resulted in program crashes.
Being able to create an XML file to rebuild from would possible help this problem.