You have a MLT XML clip selected.
The current (and older) version(s) of Shotcut doesn’t show any informations about MLT XML clips in the Properties panel.
But we will get these infos in the upcoming version (and the current BETA version).
You will also see if your imported MLT XML file fits your project’s Video Mode.
Looking at your screen shots, including the same project multiple times either manually or indirectly by splitting can be very inefficient. It depends on how complex this subject is—primarily if it has multiple tracks.