here is the answer.
what you've seen in the FCTM was valid until revision 40. FCTM updating has a different update cycle, although it is getting in the facts a kind of reference document since infos in it are most of the time much more valuable that what we can have (or not have) somewhere else in the FCOMs. the rev 41 correcting the smoke removal procedure has been published last year around June I guess !
during 20 years, if in emer elec config before the smoke removal procedure, it was impossible to apply that procedure since it was impossible to deflate the cabin : closure of pack 2 valve inop, manual control of outflow valve inop. could have been nice to tell it in the check list itself at least not to waste time on trying to understand why it was not working in an emergency situation. actually the solution was to cancel the emer config. that manual emer config is indeed reversible by performing the items of the check-list in the reverse direction.
With the rev 41, we have a new item :"APU master sw on". nothing to do with a possible usage of the APU. we are not looking for electric power in the circuits aren't we ? it is because that action will have an effect on the batteries connection (see note in fcom 3.02.26) enabling the manual control of the outflow valve