A beaker full of death wrote:
Many episodes of TNG season 2 were rewritten from scripts for phase II, due to the writers' strike. It definitely feels the most like TOS out of the rest of TNG.
I thought only one episode was a re-write of a script for that earlier, aborted series -- "The Child." What other episode(s) are you thinking of?
"Devil's Due" was also a re-write of a script for Phase II, of course, but that didn't come until season four.