I thought you might be interested in looking at Why do editor place waypoints disappear once a unit group gets into combat. Is this a Bohemian issue?.
https://forums.bohemia.net/forums/topic/230511-why-do-editor-place-waypoints-disappear-once-a-unit-group-gets-into-combat-is-this-a-bohemian-issue/?do=findComment&comment=3416311
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