When a visibility rule is applied to a field in App Builder, there's a checkbox controlling whether previously entered data remains visible when the rule hides the field. This currently defaults to unchecked. The impact: field technicians lose sight of historic data in the record view. The only workaround is opening the History section under View Records and scrolling through change logs, which is impractical for field crews working on mobile devices in time-pressured environments. This default catches app builders out because the consequence isn't obvious at design time, and it only surfaces later as missing data reported from the field. We hit this across our smart metering programs (utility sector, Australia) and it caused genuine operational issues before we traced the cause. Request: change the default so historic data remains visible when a visibility rule is applied (checkbox checked by default), or remove the hide-historic-data behaviour entirely. If there's a legitimate use case for hiding prior values, the safer default is still to show them, with hiding as the opt-in.