How can you prevent manual changes to a tag in Historian from being overwritten when reimporting tags from InTouch?

To ensure that manual changes to a tag in the Historian are preserved when reimporting tags from InTouch, setting the tag's Current Editor to Historian is an effective approach. This strategy works because when the tag's Current Editor is specified as Historian, it indicates that the Historian is the authoritative source for managing that tag's properties. Consequently, if changes are made manually within the Historian environment, those modifications are safeguarded against being overwritten during the reimport process from InTouch.

The other options do not provide a reliable method for preventing manual changes from being lost. Disabling the tag before import could halt any further data collection or changes but does not actively prevent overwriting existing settings. Backing up the current tag is a prudent practice for recovery but does not directly stop the overwrite from occurring. Deleting existing configurations not only risks losing the intended settings but also complicates the reimport process since it can lead to additional issues with tag integrity. Therefore, specifying Historian as the Current Editor is the most effective method for maintaining manual adjustments during tag reimportation.