Given that League events can be spread over the course of several months and the iterative nature of the engineering design process, if a team were to use several different versions of a robot could they submit an element of their design/strategy from their first robot version that is no longer a part of their final design/strategy (assuming that the judging occurs on the final day of the league). Relevant section from the Guide to Judging:
Teams identify a specific section or specific pages in their notebook covering the origin and development of a single design element, strategy, or other attribute that is a key part of their team’s robot design or gameplay that is in use at the event.
To make slightly less abstract, a team submits for their Innovate award Widget A which they used at the first League day. By the last League day (e.g. the day of judging) Widget A is no longer a part of their robot.