IndexLifecycleRunner policy index failed on step IllegalArgumentException is not the write index for alias

[cawoodm (Marc)]

Elasticsearch (7.7) seems to be in confusion about which indices it has rolled over and is logging:

[2020-06-02T09:23:53,425][ERROR][o.e.x.i.IndexLifecycleRunner] [ecom-repository01] policy [test-policy] for index [logs-test-000001] failed on step [{"phase":"hot","action":"rollover","name":"check-rollover-ready"}]. Moving to ERROR step
java.lang.IllegalArgumentException: index [logs-test-000001] is not the write index for alias [logs-test]

As you can see below it should not be rolling logs-test-000001 over but logs-000003:

[
    {
        "alias": "logs-test",
        "index": "logs-test-000003",
        "filter": "-",
        "routing.index": "-",
        "routing.search": "-",
        "is_write_index": "true"
    },
    {
        "alias": "logs-test",
        "index": "logs-test-000002",
        "filter": "-",
        "routing.index": "-",
        "routing.search": "-",
        "is_write_index": "false"
    },
    {
        "alias": "logs-test",
        "index": "logs-test1",
        "filter": "-",
        "routing.index": "-",
        "routing.search": "-",
        "is_write_index": "false"
    },
    {
        "alias": "logs-test",
        "index": "logs-test-000001",
        "filter": "-",
        "routing.index": "-",
        "routing.search": "-",
        "is_write_index": "false"
    }
]

How can we point ILM at the correct index??