Just as 8th of Nissan remains restricted even if 1st set of YT are nullified, so too 29th Adar remains restricted even if 28th is nullified (bc 1st Nissan)
Just as 8th of Nissan remains restricted even if 1st set of YT are nullified, so too 29th Adar remains restricted even if 28th is nullified (bc 1st Nissan)