The question of validity of Orders is a very sensitive one especially for Anglican clergy considering entering the full communion of the Catholic Church. If one accepts the magisterium of the Catholic Church it can seem that one has to reject the validity of one's ministry as an Anglican. It is both very sensitive and very difficult to talk about this subject objectively and helpfully. However I came across this article today which I think (as a former Anglican clergyman and now Catholic priest) is very helpful by looking a little more deeply at the theology, beyond the usual discussions that one finds on this topic on the internet. I highly recommend it.
http://www.hprweb.com/2013/09/the-invalidity-of-anglican-orders-and-the-ordinariate-of-the-chair-of-st-peter/
The Invalidity of Anglican Orders and the Ordinariate of the Chair of St. Peter
While Apostolicae Curae holds that Anglican ordination
does not confer the fullness of Catholic orders, this by no means
implies that Anglican ordination is without its own value and purpose.
