It seems to me that a) this is an inherent and long-standing feature of messaging systems that use open, free, and/or federated protocols, b) it invites even more interruptions as you're blending policies of two or more organisations, and lowest common denominator will likely 'win', c) you're still stuck mapping any non-trivial issues raised in chat back onto a proper tracking system.<p>The suggestion that your knowledge 'archive' is located in an off-site subscription service that's not indexed with the rest of your institutional knowledge systems, and likely with a poor signal:noise ratio, is worrisome. Do some organisations actually work this way?