AWS GLUE Dynamodb - How to retain empty columns as empty when migrating data in glue

I'm trying to migrate the data from one dynamodb table which contains two columns(country, isMinor) as empty for few items to another dynamodb table.

But after migration it puts null values in target dynamodb table for these two missing columns

Is there any way this is possible. Appreciate quick help on this.

Thanks in advance.

e.g. In source table:

 item1 = {
      "Name": {
        "S": "ABCD"
      },
      "Age": {
        "N": "10"
      }
    }

item2 = {
      "Name": {
        "S": "DEFG"
      },
      "Country": {
        "S": "XYZ"
      },
      "isMinor": {
        "BOOL": true
      },
      "Age": {
        "N": "11"
      }
    }

After migration it shows item1 as:

 item1 = {
  "Name": {
    "S": "ABCD"
  },
  "Country": {
    "NULL": true
  },
  "isMinor": {
    "NULL": true
  },
  "Age": {
    "N": "11"
  }

But the expectation after migration in target dynamodb table is as below(same as the item in the source table):

item1 = {
  "Name": {
    "S": "ABCD"
  },
  "Age": {
    "N": "10"
  }
}

Unfortunately this is how Glue will write the data to DynamoDB, as Glue expects a structured schema.

Depending on your type of migration, if you do not require transformation of the data you may be able to use

• AWS Backup
• DynamoDB Export/Import