Enable multiple work item fields mapped to the IterationPath
We have multiple fields related to the iteration of the bug. The first is the iteration the bug was discovered in, the second is the target fix iteration, and the last is the actual fix iteration. We would like to be able to have each of these three pull from the Iterations list in work items. While we can make the first and last regular text fields, this may result in typos and thus degrade search. It also requires users to know the iterations available.
It would also be usful to not limit this to the IterationPath, to allow new custom fields to be added to workitems.