I went through an old book and this is the only reference on the subject I could come across.
Ref.: Petersen's Big Book of Photography, edited in 1977. section 22 basic retouching techniques, p.431
As far as I can tell, chlorine will remove the silver from the image. But this process doesn't need fixing since it doesn't work on the same principles as Farmer's reducer. A strong alkali will soften the gelatin emulsion and the bleach will oxidize the silver at an accelerated rate (causing fading). Fixing again won't stabilize it any more. An acidic bath will stop the chlorine action but will also cause the release of highly toxic chlorine fumes (this is basically how gas chambers worked... a very bad thing) so I would not recommend it (even if the concentrations are very low, better be safe than sorry). Just good long wash in plain water should suffice. And also working in a very well ventilated area would be highly recommended since we don't really know what reaction the bleach will have with the chemicals in the emulsion...
Hope it helps clear this out...
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