It means that the regulations are not fit for purpose.
At the same time that the amended CAP493 came out, which mandated the use of the semi-circular rule above 3000', a
separate exemption from SERA was published that required continued use of the quadrantal rule. The best part of a month later, the situation hasn't been resolved and these documents are both still current, both listed on the CAA website, in direct contradiction of each other.