Winlogbeat sending data to default index

Trying to setup winlogbeat but it seems to be sending documents only to default index - winlogbeat-7* instead of the one I explicity mentioned in the winlogbeat.yml. I must be missing something basic but can't figure out...hope one of you guys can catch what's the issue here:

winglogbeat v: 7.13.2

winlogbeat.yml:

winlogbeat.event_logs:
  - name: FedEx    
    level: critical, error, warning
  - name: System
    level: critical, error, warning

#==================== Elasticsearch template setting ==========================

setup.template.settings:
  index.number_of_shards: 1

#-------------------------- Elasticsearch output ------------------------------
output.elasticsearch:
  # Array of hosts to connect to.
  hosts: ["es1.company.com:9200","es2.company.com:9200"]         

  # Optional protocol and basic auth credentials.
  protocol: "http"
  password: ***
  username: elastic 
  index: "uat-winlogbeat"
setup.template.enabled: false  
setup.template.name: "uat-winlogbeat"
setup.template.pattern: "uat-winlogbeat-*"

Here's the template definition in elastic:

{
  "uat-winlogbeat" : {
    "order" : 200,
    "index_patterns" : [
      "uat-winlogbeat-*"
    ],
    "settings" : {
      "index" : {
        "lifecycle" : {
          "name" : "Small_ILM_Policy",
          "rollover_alias" : "uat-winlogbeat"
        },
        "refresh_interval" : "10s",
        "number_of_shards" : "1",
        "number_of_replicas" : "1"
      }
    },
    "mappings" : { },
    "aliases" : { }
  }
}

Alias:

{
  "uat-winlogbeat-2022.01.12-1" : {
    "aliases" : {
      "uat-winlogbeat" : {
        "is_write_index" : true
      }
    }
  }
}

Winlogbeat logs:

PS C:\Program Files\winlogbeat-7.13.2-windows-x86_64> .\winlogbeat.exe -e -c .\winlogbeat.yml
2022-01-12T15:39:15.508-0600    INFO    instance/beat.go:665    Home path: [C:\Program Files\winlogbeat-7.13.2-windows-x
86_64] Config path: [C:\Program Files\winlogbeat-7.13.2-windows-x86_64] Data path: [C:\Program Files\winlogbeat-7.13.2-w
indows-x86_64\data] Logs path: [C:\Program Files\winlogbeat-7.13.2-windows-x86_64\logs]
2022-01-12T15:39:15.520-0600    INFO    instance/beat.go:673    Beat ID: 30dc3d35-1a28-4f3b-afe9-3b2e08c82c88
2022-01-12T15:39:15.522-0600    INFO    [beat]  instance/beat.go:1014   Beat info       {"system_info": {"beat": {"path"
: {"config": "C:\\Program Files\\winlogbeat-7.13.2-windows-x86_64", "data": "C:\\Program Files\\winlogbeat-7.13.2-window
s-x86_64\\data", "home": "C:\\Program Files\\winlogbeat-7.13.2-windows-x86_64", "logs": "C:\\Program Files\\winlogbeat-7
.13.2-windows-x86_64\\logs"}, "type": "winlogbeat", "uuid": "30dc3d35-1a28-4f3b-afe9-3b2e08c82c88"}}}
2022-01-12T15:39:15.523-0600    INFO    [beat]  instance/beat.go:1023   Build info      {"system_info": {"build": {"comm
it": "686ba416a74193f2e69dcfa2eb142f4364a79307", "libbeat": "7.13.2", "time": "2021-06-10T21:23:44.000Z", "version": "7.
13.2"}}}
2022-01-12T15:39:15.524-0600    INFO    [beat]  instance/beat.go:1026   Go runtime info {"system_info": {"go": {"os":"wi
ndows","arch":"amd64","max_procs":8,"version":"go1.15.13"}}}
2022-01-12T15:39:15.528-0600    INFO    [beat]  instance/beat.go:1030   Host info       {"system_info": {"host": {"archi
tecture":"x86_64","boot_time":"2022-01-09T03:00:31.72-06:00","name":"host1","ip":["fe80::44c2:867:ab90:c596/64","
10.35.80.207/20","::1/128","127.0.0.1/8"],"kernel_version":"6.3.9600.20111 (winblue_ltsb_escrow.210812-0920)","mac":["00
:50:56:a3:df:58","00:00:00:00:00:00:00:e0"],"os":{"type":"windows","family":"windows","platform":"windows","name":"Windo
ws Server 2012 R2 Standard","version":"6.3","major":3,"minor":0,"patch":0,"build":"9600.20120"},"timezone":"CST","timezo
ne_offset_sec":-21600,"id":"b4046fd3-5756-4650-85c6-052ebfd71223"}}}
2022-01-12T15:39:15.530-0600    INFO    [beat]  instance/beat.go:1059   Process info    {"system_info": {"process": {"cw
d": "C:\\Program Files\\winlogbeat-7.13.2-windows-x86_64", "exe": "C:\\Program Files\\winlogbeat-7.13.2-windows-x86_64\\
winlogbeat.exe", "name": "winlogbeat.exe", "pid": 5456, "ppid": 4652, "start_time": "2022-01-12T15:39:14.974-0600"}}}
2022-01-12T15:39:15.530-0600    INFO    instance/beat.go:309    Setup Beat: winlogbeat; Version: 7.13.2
2022-01-12T15:39:15.531-0600    INFO    [index-management]      idxmgmt/std.go:184      Set output.elasticsearch.index t
o 'winlogbeat-7.13.2' as ILM is enabled.
2022-01-12T15:39:15.531-0600    INFO    eslegclient/connection.go:99    elasticsearch url: http://es1:9200
2022-01-12T15:39:15.531-0600    INFO    eslegclient/connection.go:99    elasticsearch url: http://es2:9200
2022-01-12T15:39:15.532-0600    INFO    [publisher]     pipeline/module.go:113  Beat name: host1
2022-01-12T15:39:15.532-0600    INFO    beater/winlogbeat.go:69 State will be read from and persisted to C:\Program File
s\winlogbeat-7.13.2-windows-x86_64\data\.winlogbeat.yml
2022-01-12T15:39:15.533-0600    INFO    [monitoring]    log/log.go:117  Starting metrics logging every 30s
2022-01-12T15:39:15.533-0600    INFO    instance/beat.go:473    winlogbeat start running.
2022-01-12T15:39:15.543-0600    WARN    beater/eventlogger.go:124       EventLog[FedEx] Open() error. No events will be
read from this source. The specified channel could not be found. Check channel configuration.
2022-01-12T15:39:16.618-0600    INFO    [publisher_pipeline_output]     pipeline/output.go:143  Connecting to backoff(el
asticsearch(http://es1com:9200))
2022-01-12T15:39:16.618-0600    INFO    [publisher]     pipeline/retry.go:219   retryer: send unwait signal to consumer
2022-01-12T15:39:16.618-0600    INFO    [publisher_pipeline_output]     pipeline/output.go:143  Connecting to backoff(el
asticsearch(http://es2.com:9200))
2022-01-12T15:39:16.620-0600    INFO    [publisher]     pipeline/retry.go:223     done
2022-01-12T15:39:16.621-0600    INFO    [publisher]     pipeline/retry.go:219   retryer: send unwait signal to consumer
2022-01-12T15:39:16.621-0600    INFO    [publisher]     pipeline/retry.go:223     done
2022-01-12T15:39:16.627-0600    INFO    [esclientleg]   eslegclient/connection.go:314   Attempting to connect to Elastic
search version 7.13.2
2022-01-12T15:39:16.627-0600    INFO    [esclientleg]   eslegclient/connection.go:314   Attempting to connect to Elastic
search version 7.13.2
2022-01-12T15:39:16.633-0600    INFO    [esclientleg]   eslegclient/connection.go:314   Attempting to connect to Elastic
search version 7.13.2
2022-01-12T15:39:16.635-0600    INFO    [index-management]      idxmgmt/std.go:261      Auto ILM enable success.
2022-01-12T15:39:16.637-0600    INFO    [index-management.ilm]  ilm/std.go:160  ILM policy winlogbeat exists already.
2022-01-12T15:39:18.873-0600    INFO    [index-management.ilm]  ilm/std.go:135  Index Alias winlogbeat-7.13.2 successful
ly created.
2022-01-12T15:39:18.874-0600    INFO    [publisher_pipeline_output]     pipeline/output.go:151  Connection to backoff(el
asticsearch(http://es1com:9200)) established
2022-01-12T15:39:18.878-0600    INFO    [index-management]      idxmgmt/std.go:261      Auto ILM enable success.
2022-01-12T15:39:18.881-0600    INFO    [index-management.ilm]  ilm/std.go:160  ILM policy winlogbeat exists already.
2022-01-12T15:39:18.889-0600    INFO    [index-management.ilm]  ilm/std.go:121  Index Alias winlogbeat-7.13.2 exists alr
eady.
2022-01-12T15:39:18.890-0600    INFO    [publisher_pipeline_output]     pipeline/output.go:151  Connection to backoff(el
asticsearch(http://es2.com:9200)) established
2022-01-12T15:39:19.164-0600    INFO    beater/eventlogger.go:88        EventLog[System] successfully published 50 event
s
2022-01-12T15:39:19.437-0600    INFO    beater/eventlogger.go:88        EventLog[System] successfully published 100 even
ts
2022-01-12T15:39:19.497-0600    INFO    beater/eventlogger.go:88        EventLog[System] successfully published 50 event
s
2022-01-12T15:39:19.576-0600    INFO    beater/eventlogger.go:88        EventLog[System] successfully published 50 event
s
2022-01-12T15:39:19.599-0600    INFO    beater/eventlogger.go:88        EventLog[System] successfully published 50 event
s
2022-01-12T15:39:19.624-0600    INFO    beater/eventlogger.go:88        EventLog[System] successfully published 50 event
s

I see data going into winlogbeat-7.13.2-* index as opposed to the one listed in the above yml file.
Thanks!

It looks like you are managing the ILM setup and write alias creation yourself so disable ILM setup in the Beats.

See Configure index lifecycle management | Filebeat Reference [7.16] | Elastic

setup.ilm.enabled: false

Thanks Andrew! That seems to have worked, although am confused as to why I have to specify that property on winlogbeat even though I do plan on using ILM to manage. I thought alias creation with the seed index as write index is needed to start using ILM.