The 22nd is the last day to register the AE stakes...
and if you don't then, as for the BTT Holders, the 'extended period' kicks in and the longer you delay the less NEM per AE stake you'll get:
23 Nov to 22 Dec: 750,000 NEM per stake
23 Dec to 22 Jan: 500,000 NEM perr stake
23 Jan to 22 Feb: 250,000 NEM per stake
On and from 23 February, any unclaimed stake is worthless.
Correct?