This exception is of particular importance if the will-maker marries after making a will.
As the automatic revocation of a will by subsequent marriage of the will-maker is abolished under the WESA (s. 55(1)), the way in which the exception operates depends on the sequence in which the execution of the will, the marriage, the effective date of Part 4 of the WESA, and the date of death occur.
If a will is revoked because of the marriage of the will-maker before Part 4 is brought into force, the clear meaning of s. 186(3) is that its entry into force does not revive the will.
For a detailed overview of the law relating to the revocation of a will , please visit my blog dated November 19,2014.
There is a blog on the presumption that a lost will is revoked on the November 3, 2011 blog
and a further article on revocation of wills on March 12, 2014.