根据您提供的问题描述，我理解您想要解决的问题是如何修改ADF v2的发布更改将所有工件都列为“新建”的行为，而不是只修改2个流水线。以下是一种可能的解决方法：

{
  "type": "Microsoft.DataFactory/factories",
  "name": "[parameters('factoryName')]",
  "apiVersion": "2018-06-01",
  "location": "[parameters('location')]",
  "identity": {
    "type": "SystemAssigned"
  },
  "properties": {
    "gitConfiguration": {
      "repositoryUrl": "[parameters('repositoryUrl')]",
      "rootFolder": "[parameters('rootFolder')]",
      "branch": "[parameters('branch')]",
      "publishBranch": "[parameters('publishBranch')]",
      "lastCommitId": "",
      "factoryObjectId": ""
    },
    "dataLakeStoreProperties": {
      "suffix": "[parameters('dataLakeStoreSuffix')]"
    },
    "publicNetworkAccess": "Enabled",
    "vstsConfiguration": {
      "accountName": "[parameters('vstsAccountName')]",
      "projectId": "[parameters('vstsProjectId')]",
      "gitRepoId": "[parameters('vstsGitRepoId')]",
      "rootFolder": "[parameters('vstsRootFolder')]",
      "branch": "[parameters('vstsBranch')]",
      "publishBranch": "[parameters('vstsPublishBranch')]",
      "projectName": "[parameters('vstsProjectName')]"
    },
    "globalParameters": {},
    "encryption": {
      "type": "Managed",
      "keyVaultBaseUrl": "[parameters('keyVaultBaseUrl')]",
      "keyVaultKeyVersion": "[parameters('keyVaultKeyVersion')]"
    },
    "annotations": [],
    "createAllWorkers": true,
    "upgradeTillVersion": "2.0.0.0",
    "enablePricingTier": true,
    "vstsAccessToken": {
      "type": "SecureString",
      "value": "[parameters('vstsAccessToken')]"
    },
    "publishArmTemplates": false,
    "vstsLinkedServiceName": "[parameters('vstsLinkedServiceName')]",
    "vstsRepositories": [
      {
        "repositoryName": "[parameters('vstsRepoName')]",
        "rootFolder": "[parameters('vstsRootFolder')]",
        "branch": "[parameters('vstsBranch')]",
        "publishBranch": "[parameters('vstsPublishBranch')]",
        "projectName": "[parameters('vstsProjectName')]"
      }
    ],
    "vstsPublishCommitId": "",
    "vstsPublishRepositoryId": ""
  }
}

在上述代码中，我们可以看到"vstsRepositories"属性是一个数组，可以添加多个VSTS仓库。您可以根据您的需求将所有工件都列为“新建”添加到该数组中的每个仓库。

请注意，这只是一种可能的解决方法，具体的实施方式可能会因您的具体需求和环境而有所不同。请根据您的实际情况进行相应的调整和修改。