Up-to-date AFCAD is already completed and will be available a day before.
Do they instantly change the runway markings into taxiway markings? I would assume they need to do at least some work taking longer than a day to convert the runway to a taxiway.
Im not entirely sure what you are trying to get at by that remark but it will be the same process as when 14L/32R was renamed to SS and then H1 and now H2. A big yellow X will be the first step, then they will cover all runway related markings on the surface including holdshort markings. Then they will replace them with taxiway markings. After that they will slowly change all runway related signs into taxiway signs. By the end of the year, all of the runway north of 9R will be completely demolished. This was why T1 was relocated to just north of Taxiway E... so that there is still a possible route to get to the MX ramp without literally shutting down the flow of traffic from 9L/27R since T is always southeast bound.
That being said, I decided not to go that route so in my AFCAD 33 will be COMPLETELY redone into a taxiway.. not just removal of rwy markings and and a yellow x added. It looks very nice and clean so I dont think their will be any issues on how it is portrayed to the simmers who use it. Regardless if it did have markings on it or not closed means closed and you cant take off of a closed runway even if they have not painted the big yellow X yet... even prior to that it still can not be used for anything other than taxiing.
Now then, 33 was hardly ever used it was for the most part only a taxiway in the final stages of its life. Its a mess but they definitely have a plan and know what they are doing. Very happy this disaster of a runway is finally gone since they barely ever used it such as during nighttime quiet ops or that odd day in a blue moon when the wind was howling out of the NW. cant wait for 27C/9C to be built.. basically gonna have to do the AFCAD from scratch unless you want the runway to go right into the MX ramp and ARFF building lol.
Cheers.
