External walls disappear after some time while no decay is enabled, however structures like foundations and walls not. Please Fix

{
  "General": {
    "Disable decay for all entities": false,
    "Exclude \"Other Multipliers\"": false,
    "Use permission": true,
    "Decay if there is no owner (and perms enabled)": false,
    "Permission": "nodecay.use",
    "Output": {
      "Output to server console": false,
      "Log to file": true,
      "Log file name": "NoDecay-Log"
    },
    "Cupboard Settings": {
      "Disable No Decay if resources placed in TC": false,
      "Require Tool Cupboard": false,
      "Any authed on TC": false,
      "Cupboard Range": 30.0,
      "Block cupboard wood": false,
      "Block cupboard stone": false,
      "Block cupbard metal": false,
      "Block cupboard high quality": false
    }
  },
  "Building grade multipliers": {
    "Twig multiplier": 1.0,
    "Wood multiplier": 0.0,
    "Stone multiplier": 0.0,
    "Sheet Metal multiplier": 0.0,
    "Armoured multiplier": 0.0
  },
  "Other multipliers": {}
}​

High External walls are not attached to the foundation so therefore are not "linked" to the foundation, anything not linked to the foundation will decay,  try the plugin for High External wall protection

You will need to add them to your config under "Other multipliers" as shown in the plugin documentation.

"Other multipliers" {
    "wall.external.high.stone": 0.0
},

0x89A

You will need to add them to your config under "Other multipliers" as shown in the plugin documentation.

"Other multipliers" {
    "wall.external.high.stone": 0.0
},

Why would you have to do that when they are already in the config ?
"highStoneWall": 0.0,
"highWoodWall": 0.0,

and if they are not the High External stone/wood walls what are they ?

pookins

Why would you have to do that when they are already in the config ?
"highStoneWall": 0.0,
"highWoodWall": 0.0,

and if they are not the High External stone/wood walls what are they ?

0x89A

Wrong plugin version, that config is for a separate version developed by someone else on a different website. Mine works a little differently

My apologies to all.  Forgot I followed last mainainer of original over to other site,  have to take this one off of "watch"