Update flags! (#1793)

Update `FilterWorkItemsThatAlreadyExistInTarget` and
`ShouldCreateNodesUpFront` to false.

- `FilterWorkItemsThatAlreadyExistInTarget` should be false and at some
point should be removed. It causes too many issues for users.
- `ShouldCreateNodesUpFront` is necessary now as we have integrated it
into the mapping engine.

src/MigrationTools/_EngineV1/Configuration/Processing/WorkItemMigrationConfig.cs

@@ -212,7 +212,7 @@ public WorkItemMigrationConfig()
  {
  Enabled = false;
  WorkItemCreateRetryLimit = 5;
- FilterWorkItemsThatAlreadyExistInTarget = true;
+ FilterWorkItemsThatAlreadyExistInTarget = false;
  ReplayRevisions = true;
  LinkMigration = true;
  AttachmentMigration = true;
@@ -235,7 +235,7 @@ public WorkItemMigrationConfig()
  SkipRevisionWithInvalidIterationPath = false;
  SkipRevisionWithInvalidAreaPath = false;
  ShouldCreateMissingRevisionPaths = true;
- ShouldCreateNodesUpFront = true;
+ ShouldCreateNodesUpFront = false;
  }
  }
 }