The front seat vertical tether point for child seat is on the inside track of the seat adjuster. The belt goes over the seat between the back and the headrest, then down to the floor anchor fixed to the seat rail. The rear ones are immediately behind each seat on the saloon, behind the head rests. The rears would obviously be different on the Tourer. To be honest, they look far more robust than the plastic bracket shown in the original post.
Cant see why the front especially would be different on the tourer. Worth a look though, as they must be for something.
Edit. On looking at the diagram again, the three child seat anchor points are shown as number 3, and there are only three shown because the front one is on the floor. (could that be right?). They are shown along the rear of the roof, nowhere near the midpoint of the doors.
None at the front, just the rear doors and tourer window so my guess is some sort of strengthener for the longer heavier roof insulation and lining.
Take them all off, plus Number "8" in the centre. If the roof falls down , you will know.

Rick.
2013 Citroen DS 5 D/Sport
2007 Renault Clio Campus sport. 1.2l
Sometimes the change doesn't work.