So a client was talking to me about her work dynamics and she said something so clever I have to repeat it here.
Every time she has an important conversation with management, or a client, she writes a thank you email. Something like - thanks so much for taking the time to talk to me about X today, your insights were really helpful. I've clarified that I need to do Y and Z. I'll start doing that today.
Or simple words to that effect - which get a written, time stamped confirmation of the talk, and in effect, 'get it in writing'. Most times she just gets a 'glad I could help', sometimes she gets further clarification. It's never back fired on her, but it's a graceful way to get the conversation confirmed in writing.
They're always telling us to get everything in writing. Here's a simple and elegant way to do so! Also - send that email to your home email as well, so you have access to it even after you leave work...