Process instance not visible in Admin App

All,
I uploaded the oneTaskProcess

and I used the REST API (POST on http://localhost:8080/flowable-rest/service/runtime/process-instances) to start the process. Based on the response (partial snippet below)
“id”: “099c67c3-88a1-11ec-b75e-aee5b972b52b”,
“url”: “http://localhost:8080/flowable-rest/service/runtime/process-instances/099c67c3-88a1-11ec-b75e-aee5b972b52b”,
“name”: “myProcessInstanceName2”,
“businessKey”: “myBusinessKey2”,
“suspended”: false,
“ended”: false,
“processDefinitionId”: “oneTaskProcess:1:c51b29df-3d37-11ec-9bc3-acde48001122”,
“processDefinitionUrl”: “http://localhost:8080/flowable-rest/service/repository/process-definitions/oneTaskProcess:1:c51b29df-3d37-11ec-9bc3-acde48001122”,
“processDefinitionName”: “Famous One Task Process”,
“processDefinitionDescription”: null,

My understanding is that an instance was created. But, the Admin App → Process engine → Instances doesn’t show it.

Help please?