Tacit Knowledge

When P&G bought Tambrands (the makers of Tampax) in 1997 and moved the incoming company's headquarters, the business leaders were very concerned that some employees might not stay. The company would therefore lose much of its tacit knowledge about the success of the brand, the capabilities related to the product, and the close consumer relationships that the company had fostered. 

So P&G interviewed many of the Tambrands veterans and made the transcripts searchable with fuzzy logic. Of course, this is not the only way to preserve the capabilities you are acquiring; whatever tactics you choose, it's important to plan for preserving not just the assets you acquire, but the capabilities as well.