(3)Notwithstanding anything contained in sub-section (1), the Board or the Director General, or the Chief Commissioner or Commissioner if so authorised by the Board, may, by order in writing, transfer any appeal which is pending before a Deputy Commissioner (Appeals) and any matter arising out of or connected with such appeal and which is so pending, to the Commissioner (Appeals) if the Board or, as the case may be, the Director General or Chief Commissioner or Commissioner (at the request of the appellant or otherwise) is satisfied that it is necessary or expedient so to do having regard to the nature of the case, the complexities involved and other relevant considerations and the Commissioner (Appeals) may proceed with such appeal or matter, from the stage at which it was before it was so transferred:Provided that the appellant may demand that before proceeding further with the appeal or matter, the previous proceeding or any part thereof be re-opened or that he be reheard.Explanation. - For the purposes of this section,-(a)"appointed day" means the 10th day of July, 1978, being the day appointed under section 39 of the Finance (No. 2) Act, 1977 (29 of 1977);(b)"status" means the category under which the assessee is assessed as "individual", "Hindu undivided family" and so on.]