Continuation of recovery proceedings: recovery may proceed without fresh notice when appeals alter tax demands, with required intimations. Section 84 permits continuation of recovery proceedings where a demand notice has been served and an appeal, revision or other proceedings are filed. If dues are enhanced, the Commissioner shall serve another notice for the enhancement and recovery may continue without a fresh notice from the prior stage. If dues are reduced, no fresh notice is necessary; the Commissioner must intimate the reduction to the taxable person and the authority with pending recovery, and recovery may continue in relation to the reduced amount from the stage prior to disposal.