If you are in multiple challenges at once and their weigh-in windows overlap, you may submit one weigh-in to apply to these overlapping challenges. When you submit your weigh-in, you will be prompted to specify for which challenge it should be used. If you do not select a particular challenge, your weigh-in will not count for that challenge. This applies to Kickstarters and Transformers as well as Progress and Round weigh-ins.