Backslash automatically getting removed from the json while reading and need to preseve the backslash – Azure Data Factory

Backslash from the json is getting removed after the file is processed by copy activity

I have json input file which contains the below object

INPUT

{
    "Name": "xyz",
    "DOB":"14/09/1995"

}

After i read the files and save using the copy activity backslash from the DOB is getting removed.

Actual OUTPUT getting from Copy activity

{
    "Name": "xyz",
    "DOB":"14/09/1995"

}

I need to preserve the backslash

Required Output needed after copy activity

{
    "Name": "xyz",
    "DOB":"14/09/1995"

}