If you ask most motor shops yes they should be resized after installing a different rod bolt then is already in there. I just had this chat with a big engine builder, he explained to me the torque specs are different between the bolts and once you trq it down more with the good bolts it throws it off just a little bit, enough to get them resized.
I've upgraded in the past and didnt take my chances. Some get away with it some dont chance it .. my thoughts its cheaper then losing a motor for something stupid.