Within the article, it stated that the Rova was destroyed by fire just before the nomination of the site was to be discussed by the World Heritage Committee
An interesting possibility but I have so far been unable to find any evidence of it and some which brings it into question - this could be another bit of "Wiki misinformation"
a. The fire took place in Nov 1995. The 1995 WHC took place in Dec in Berlin and the event did not receive a minuted reference
b. The Malagasy Republic didn't submit a T List until Nov 1997 (shown by documentation on the UNESCO Web site) - so any nomination couldn't have been being discussed soon after the fire? However Madagascar WAS active in WHS matters from the early years having signed the convention in 1983 and having proposed Tsingy de Bemaraha back in 1988 (eventually inscribed in 1990) before T List entries were required in advance of Nominations - which only became the rule in 1984 with the decision that, from 1985 onwards no CULTURAL sites would be considered by the WHC which hadn't been registered on the T List.
c. I have not been able to get any "search return" on the UNESCO Web site on the subject -though "Rova" for instance does (correctly) return the Rova which is on the T List at Tsinjoarivo.
d. There is evidence that UNESCO was involved AFTER the fire in helping the Malagasy Republic to decide how to progress - "UNESCO recommended that an independent committee of local experts be set up to tackle the issue. This produced the "DNOR" or National Direction of the Rova Operation"
and in French (slightly different) "dans les jours qui suivirent l'incendie et suite à un appel à la solidarité internationale lancé par l'UNESCO, de cette catastrophe est né le Comité national pour l'opération Rova."
Both of these are from http://www.chin.gc.ca/Applications_URL/icom/disaster_preparedness_book/country/rakoto arisoa.pdf
That document makes no mention of the site having been close to nomination.
e. The nomination documents for the Royal hill of Ambohamanga which was inscribed in 2001 make no mention of any work to inscribe the rova of Antananarivo
It is possible that the Malagasy Republic was doing some work (including intending having it on their upcoming T List) to prepare the Rova of Antananarivo for nomination before the fire put paid to such plans (though I have found no records of this) - but it seems most unlikely that the site was anywhere near ready for being nominated as the rule requiring a T List for Cultural sites was already in place and no such list had been submitted (and wasn't for another 2 years). If anyone can find contrary evidence it would be interesting to hear about it!