I am neither a pilot nor an engineer. Which will no doubt be obvious by my question. Here goes.
Most speculation suggests that the main problem is the difficulty of fitting the wiring harnesses into the plane. I would assume (but is this a stupid assumption?) that the amount of wiring needed for the freighter versions will be much less than the passenger versions.
Would there not be some benefit for Airbus to use the next year to fill some of the freighter orders - and so enabling production lines for fuselage, wings, engines etc to keep moving. That also would get some cash in the bank on those sales. Meanwhile, they continue the redesign of the wiring and resume production on passenger versions in a year or so.
I know there must be some basic reason why my idea is daft, or they’d be doing it already. Are the models under construction too far down the line to be swapped to freighter versions or something basic like that?