According to this document, "AND EVER" can be used with @currentIteration +/-n when using the WIQL editor. With EVER, you should be able to accomplish your goal. See the link for more information, but something like this in WIQL should meet your needs. The syntax for the iteration name will vary.
AND [System.IterationPath] = @currentIteration('[Project]\Team')
AND EVER [System.IterationPath] = @currentIteration('[Project]\Team') -1