Informal communication structures that are broken by reorganisation

From Information by Donald Stamper. (Batsford, 1973). It is probably all standard stuff for anyone who knows anything about business systems, but I found it interesting:

Methods of performing complex tasks may be sustained solely through their constant rehearsal by the working group. [...] If the group of people who preserve a cultural memory-trace of this kind is disbanded, or diluted too much or too quickly, then the information circuit is broken and the skill or attitude will die away.