None of the major Electronic Medical Records system handled the time switch gracefully, and the solution you describe was standard practice with both Cerner and Epic for many years. When we installed Epic at the academic medical center where I worked, we insisted on significant changes and upgrades so that a shutdown would not be necessary. Epic is pretty solid now.

But the system can't solve the core problem - taking an hour out, or adding a duplicate one in, is highly disruptive to nurses already very busy schedules, and introduces multiple sources of potential confusion in patient care.

Cerner millennium can't handle it well