It appears that the protection isn't extending to HQM Doors and hatches. They are still decaying. Here's what my config file looks like:
{
"ArmorRate": 0.0,
"CheckAuth": true,
"DecayArmor": false,
"DecayMetal": false,
"DecayStone": false,
"DecayTwig": true,
"DecayWood": false,
"EntityRadius": 1000.0,
"MetalRate": 0.0,
"NeverDecay": [
"RHIB",
"Rowboat",
"HotAirBalloon",
"minicopter.entity"
],
"StoneRate": 0.0,
"TwigRate": 1.0,
"WoodRate": 0.0
}