According to the general limitation of the selection mechanism, it is impossible to separate the coincident centers of circles/arcs if they are projected to another sketch. So, the loading of the geometric dump always selects the center of the latest edge. The 'idler_plate.py' test becomes invalid after #19990 while checking the dump to Python, because centers of arcs are taken into account now when loading the geometric dump.
SketchConstraintCoincidence_48 = Sketch_2.setCoincident(SketchPoint_4.result(), SketchCircle_3.center())
SketchArc_19 = Sketch_2.addArc(model.selection("EDGE", "Sketch_1/SketchArc_9_2"))
SketchConstraintEqual_1 = Sketch_2.setEqual(SketchCircle_3.results()[1], SketchArc_19.results()[1])
-SketchPoint_5 = Sketch_2.addPoint(model.selection("VERTEX", "Sketch_1/SketchCircle_1_2__cc"))
+SketchPoint_5 = Sketch_2.addPoint(model.selection("VERTEX", "Sketch_1/SketchArc_3_2__cc"))
SketchCircle_4 = Sketch_2.addCircle(0, 0, 8.75)
SketchConstraintCoincidence_49 = Sketch_2.setCoincident(SketchPoint_5.result(), SketchCircle_4.center())
SketchConstraintRadius_12 = Sketch_2.setRadius(SketchCircle_4.results()[1], "17.5/2")