I think we have to accept that Microsoft lack either the ability, or the motivation, to fix this.
If we were a Boeing, Pepsi or Blackrock, I'm sure Microsoft would have been all over this, but we're a collection of small-to-medium enterprise users that MS really do not give a **** about.
I lost my categories six months ago.
Two years of meticulously categorising, across nearly 4,000 contacts, all gone.
I know for a fact that we lost a £17,000 sale in November because of this.
My guess is we've lost a lot more.
At the start of this year, and with a high level of begrudgery, I started to create a new set of categories, and have begun the slow, complex, painful and extremely time consuming process of recategorizing our address book data.
My biggest fear is that Microsoft either find a fix, revert back to the old categories and wipe out all of our efforts, or the same bug appears in the new categories and they also go missing.
Never before in 25 years of business have I felt so tied into such an awful supplier as Microsoft.