Issue with date

I have found when I add an entry there is no issue but when I attempt to modify the record I see the following and at no time do I have anything in my log file that says "tco". The only location for this is where It says Petco

{
     "checkdate" => "tco",
          "tags" => [
        [0] "_dateparsefailure"
    ],
          "host" => "elk.mikesdevhub.com",
      "@version" => "1",
    "@timestamp" => 2019-11-08T01:47:19.034Z,
          "path" => "/etc/logstash/fish/10gFresh.csv",
       "message" => "tco"
}
{
     "checkdate" => "Nov 6 2019 12:00:00",
          "temp" => 0.0,
      "hardness" => 0.0,
      "nitrates" => 80.0,
       "reading" => 1,
      "salinity" => 0.0,
    "Alkalinity" => 60.0,
            "pH" => 7.1,
      "nitrites" => 0.0,
       "ammonia" => 2.0,
          "host" => "elk.mikesdevhub.com",
      "@version" => "1",
    "@timestamp" => 2019-11-06T12:00:00.000Z,
      "chlorine" => 0.0,
           "who" => "petco",
          "path" => "/etc/logstash/fish/10gFresh.csv",
       "message" => "Nov 6 2019 12:00:00,1,0.0,7.1,60.0,0.0,0.0,0.0,2.0,0.0,80.0,petco"
}

It appears that my specified date field is not pulling from the appropriate column. Why is this happening? I have done some testing and have seen this

What does your configuration look like?