Is there any way to keep the original Id when migrating using Azure DevOps Migration Tools?

Question

I'm using the Azure DevOps Migration Tools to migrate our work items from one organisation to another.

The ReflectedWorkItemIDFieldName fills in ID_old with values like https://dev.azure.com/myOldSite/MyProject/_workitems/edit/99

I'd like to be able to migrate Id=xx from myOldSite to Id=xx from myNewSite, but I'm not able to find a way to migrate the Id number from the old to the new Azure DevOps systems.

Any thoughts?

My configuration.json is

{
  "Version": "8.9",
  "TelemetryEnableTrace": false,
  "workaroundForQuerySOAPBugEnabled": false,
  "Source": {
    "Collection": "https://dev.azure.com/myOldSite/",
    "Project": "MyProject",
    "ReflectedWorkItemIDFieldName": "Id",
    "AllowCrossProjectLinking": false,
    "PersonalAccessToken": ""
  },
  "Target": {
    "Collection": "https://dev.azure.com/myNewSite/",
    "Project": "MyProject",
    "ReflectedWorkItemIDFieldName": "Custom.ID_old",
    "AllowCrossProjectLinking": false,
    "PersonalAccessToken": ""
  },
  "FieldMaps": [],
  "WorkItemTypeDefinition": {
    "sourceWorkItemTypeName": "targetWorkItemTypeName"
  },
  "GitRepoMapping": null,
  "Processors": [
    {
      "ObjectType": "VstsSyncMigrator.Engine.Configuration.Processing.NodeStructuresMigrationConfig",
      "PrefixProjectToNodes": false,
      "Enabled": true,
      "BasePaths": []
    },
    {
      "ObjectType": "VstsSyncMigrator.Engine.Configuration.Processing.WorkItemMigrationConfig",
      "ReplayRevisions": false,
      "PrefixProjectToNodes": false,
      "UpdateCreatedDate": true,
      "UpdateCreatedBy": true,
      "UpdateSourceReflectedId": false,
      "BuildFieldTable": false,
      "AppendMigrationToolSignatureFooter": false,
      "QueryBit": "AND [System.WorkItemType] NOT IN ('Test Suite', 'Test Plan')",
      "OrderBit": "[System.ChangedDate] desc",
      "Enabled": true,
      "LinkMigration": true,
      "AttachmentMigration": true,
      "AttachmentWorkingPath": "c:\\temp\\WorkItemAttachmentWorkingFolder\\",
      "FixHtmlAttachmentLinks": false,
      "SkipToFinalRevisedWorkItemType": false,
      "WorkItemCreateRetryLimit": 5,
      "FilterWorkItemsThatAlreadyExistInTarget": true,
      "PauseAfterEachWorkItem": false,
      "AttachmentMazSize": 480000000,
      "CollapseRevisions": false
    }
  ]
}

Answer 1

No. The ID is system-generated and can't be guaranteed to not already be used by a different work item in the target system.