We need to move 400+ user stories from one team's backlog to a new team.
I'm moving this question to the CA Agile Central Community which is for the Rally product.
If it's only 400 stories then you could do it quickly and easily using the bulk edit features of the Custom List app (among others). You can bulk edit up to 200 items at one time so you'd only need two batches. Hope that helps.
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