I have tried removing mods 1 by 1 to see what mod was causing problem with GT Wire Cutter recipe. Attempts:
1. Did not remove any mods but deleted GregTech directory in config. GT regerated its configs and the problem still remained.
2. Removed ProjectRed mod with ForgeMultiPart library (which was required for ProjectRed) . Removed GT and ProjectRed configs. That fixed my problem - plates that are produced are still Railcraft plates, but I am now able to make GT wires from them.
I don't get it - why and how ProjectRed tampers with GT recipes? ...