Dependants name changes automatically in profile when one of their parents name changes.
I had a situation where a client of mine was in the divorced status and she had three dependants. She re-married about seven years ago and had a name change. Recently one of her dependants turned 18 in 2012 and was a first time tax filer. I had forgotten her previous married name from seven years ago but her son’s name never changed to her new married surname but rather kept his birth surname. Profile erroneously changed his surname to his mother’s new surname seven years ago and his return was e-filed and accepted under her surname because he was a first time filer.