>The ambiguity is in the KB article. It doesn't say how is the relationship established - via set relation or via grid's properties. But then, seeing that you are experiencing exactly the problem it describes, ...

And the article doesn't state that the bug is limited to only grid/browse scenarios. I've got lots of very old code that uses similar mechanisms for data munging. Are those also at risk? How deep is the problem?

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>>So, hotfix or revert to SP1 - that is the question. Neither appeals to me.
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>...it really is a dilemma. Can you just try it out with the hotfix on a couple of machines?

Yes, I can reproduce it right on my development box, running 2 instances. I'll be the guinea pig today. What a fiasco.