There exits the case that when saving changes in form A, the old saved data in form B are not cleaned, will be saved again with the new save. Thus incorrect UI behavior will be shown. This patch is to remove some useless data. https://bugzilla.tianocore.org/show_bug.cgi?id=385 Cc: Eric Dong <eric.dong@intel.com> Cc: Liming Gao <liming.gao@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Dandan Bi <dandan.bi@intel.com> Reviewed-by: Eric Dong <eric.dong@intel.com>