purging of cost and task inverse relationships in ifcopenshell.api, and amendement to cost item values editing UX in BlenderBIM

src/blenderbim/blenderbim/bim/module/cost/operator.py

@@ -332,6 +332,7 @@ class EnableEditingCostItemValues(bpy.types.Operator):
         props = context.scene.BIMCostProperties
         props.active_cost_item_id = self.cost_item
         props.cost_item_editing_type = "VALUES"
+        bpy.ops.bim.disable_editing_cost_item_value()
         return {"FINISHED"}