Not trying to flog a deceased equine, but this thought popped in my head recently when I got back a roll of old Ektachrome E2 film that had been processed as B&W.

The company that did it said that it would be processed first as B&W and scanned. Then, if there were any recoverable images and a good chance of success, the roll would be further processed into color.

I truly do not know:

1) How this is possible if the color dyes (or what remains of them) are already in the emulsion
and
2) Is it possible that we could have our Kodachrome developed into a B&W and scanned *BUT* left in a state whereby if a viable process were to emerge in the future the film could still be converted into a color image, similar to what the company was going to do with my roll of Ektachrome E2?

Somehow I doubt that we could, but I am by no means well versed enough to figure this out. I did search the forum for an answer and was unable to locate one. P.E.-- out of curiosity, do you happen to know if this is possible?

Thanks!
John