Wrong, they have not been discontinued and they have not been replaced by ISO standards. In the EU certain standards had to be aligned through legislation, eg European Directives, in order of harmonisation of product. that is everyone knows how to make something, from a safety aspect, that will meet the expectations of every country within the EU.
As such, for example the European Directive 97/23 for pressure equipment was adopted into English law as Statutory Instrument SI 1999 2001. Every country still maintains its own standards. In the UK these harmonised standards can be identified as BS EN, in Germany DIN EN. If they are not harmonised then they will not have the EN appended to them.