A change monitor as part of an online editor of a sequential function chart (SFC) programming environment monitors edits to a control routine. The change monitor provides warning to users before taking actions that would result in a reset of the control routine currently being executed by an industrial controller. The change manager reduces or eliminates many situations that would otherwise result in a reset as well by instructing online editor as to what language elements need to be assembled to implement the change. The change monitor also filters the manner in which reset warnings are given to reduce unnecessary distractions.