It appears to me that he transferred the knowledge. Dameron got a COP of 9. He was still running the IH-Rossi-built reactor as late as 2016--the same time Murray was ramping up his testing of his own modified e-Cat. Murray's modified e-Cat apparently didn't work, although he was given little time to build and test it. But the IH-Rossi-built one worked. IH admitted as much. And there are no contemporaneous emails or test reports that state otherwise.
IHFB - you have no curiosity and would never make a scientist. You think a test (undoubtedly recommended by Rossi and Fabioni, probably set up by them) showing COP=9 means a reactor works? The evidence of Rossi's tests, even when checked by 6 high-powered academics, giving lagre false positives is legendary. You suddenly seem to have an exaggerated respect for IH competence in the one area they (real estate VCs) were particularly weak. You think Dameron was able to debug Rossi's false positives?
Call IH, in retrospect, careless and over-trusting, sure. Calling Darden a forsworn liar on the assumption that IH were more technically adept than 6 Profs is stupid and unjust.