[splittiming] No more holds/rolls on Song Timing.

src/ScreenEdit.cpp

@@ -2584,6 +2584,8 @@ void ScreenEdit::ScrollTo( float fDestinationBeat )
 		if( !EditIsBeingPressed(b) )
 			continue;
 
+		if( GAMESTATE->m_bIsEditorStepTiming )
+		{
 			// create a new hold note
 			int iStartRow = BeatToNoteRow( min(fOriginalBeat, fDestinationBeat) );
 			int iEndRow = BeatToNoteRow( max(fOriginalBeat, fDestinationBeat) );
@@ -2596,6 +2598,7 @@ void ScreenEdit::ScrollTo( float fDestinationBeat )
 			tn.pn = m_InputPlayerNumber;
 			m_NoteDataEdit.AddHoldNote( iCol, iStartRow, iEndRow, tn );
 		}
+	}
 
 	if( EditIsBeingPressed(EDIT_BUTTON_SCROLL_SELECT) )
 	{