Thanks, , this report exposes an interesting blunder in the re-implementation of the valueMapper. As you can see from the draft format listed in that JIRA, the intention was always to support a top-level "input" option but somehow this was never done. This escaped notice since the only major user of the valueMapper is currently the GPII which uses static "big up front documents". I imagine if we had ever dusted off the in-progress work on metadata editing by et al this problem would have come to light earlier. We need to have a brief chat with to confirm that our understanding of the issue is correct.