I am talking about any conversation he had with Lynch or Obama after this occurred. More importantly, I am talking about any conversation he had with Obama on any topic. Why keep records on one President and not another?
Good grief. It's right in the article you linked:
Comey said he only spoke with Obama twice during his presidency, but talked to Trump nine times within four months of his.
He explained why he documented the conversations he had with Trump.
“I felt compelled to document my first conversation with the President-Elect in a memo,” Comey writes. “To ensure accuracy, I began to type it on a laptop in an FBI vehicle outside Trump Tower the moment I walked out of the meeting. Creating written records immediately after one-on-one conversations with Mr. Trump was my practice from that point forward.”
“This had not been my practice in the past,” he continued. “I spoke alone with President Obama twice in person (and never on the phone) — once in 2015 to discuss law enforcement policy issues and a second time, briefly, for him to say goodbye in late 2016. In neither of those circumstances did I memorialize the discussions. I can recall nine one-on-one conversations with President Trump in four months — three in person and six on the phone.”