This plugin is lacking one feature...automatically upgrading the entire structure - similar to what BuildingGrades does.
This plugin does one entity at a time (one wall, one frame, one foundation, etc.) - it does not automatically upgrade attached entities. You need to hit them all with a hammer or be somewhat close to them and swing the hammer at them.
If an auto-upgrade structure feature was added, I would fully move to this plugin as having the ability to upgrade individual entities is very useful. Thanks.