Replace child in place instead of deleting and appending.
Replace child in place instead of deleting and appending.

Change-Id: Idb8463d3728d2cdbaff59c7c27ec7d2044ea2bf0
Reviewed-by: Tim Jenssen <6a21f175c697b4129e1bafb6e9b52078bb1a6738@digia.com>

olear/qtifw,olear/qtifw,olear/qtifw,olear/qtifw