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I've been doing some work with Project Configurator in the past few weeks, exporting projects from one instance and importing to another, and every time I go to do an import my anxiety ramps up. Its so easy for things to go catastrophically wrong and there's nothing you can do about it:
Don't get me wrong, this is a great tool, but there aren't a lot of protection measures in place. People are people - mistakes happen. In this case they're irreversible.
It's Friday!!! I know you want to run away but wait.... I'll tell you what I'm going to do to REST MY MIND for the weekend, in case it might help you: I REVIEW my pending things in...