Places of interest in HERE Map Creator use a road segment (link) as reference. This is why you only can specify a house number but not the street name. If you move the blue car, representing a place's routing point as physical access, you change its referencing link at the same time. This results in an address change after saving and thereby falsification or loss of its address data.
As conclusion, the correct postal address must be prioritized over the actual access to a place by positioning the routing point accordingly.