No start and end time in the response of HistoricalChainResolution?

Good day experts,

I'm trying the 'get historical chain' operation, the request body is:

{
"Request": {
"ChainRics": [
"0#.SPX"
],
"Range": {
"Start": "2008-01-01T00:00:00.000Z",
"End": "2008-01-01T00:00:00.000Z"
}
}
}

And the response looks like:

...

"Constituents": [
{
"Identifier": ".SPX",
"IdentifierType": "Ric",
"Source": "",
"Key": "VjF8MHgzMDAwMDAwMDAwMDAwMDAwfDB4MzAwMDAwMDAwMDAwMDAwMHx8fHx8fHwuU1BYfA",
"Description": "Historical Instrument",
"InstrumentType": "Unknown",
"Status": "Valid",
"DomainCode": "6"
},
{

...

It missed the 'Start' and 'End' time fields?

e.g., in the ' TICK HISTORY FOR DATASCOPE SELECT 13.2 REST API USER GUIDE''s example:

...

"Constituents": [
{
"Identifier": "HOF0",
"IdentifierType": "Ric",
"Source": "",
"Key": "VjF8MHgzMDAwMDAwMDAwMDAwMDAwfDB4MzAwMDAwMDAwMDAwMDAwMHx8fHx8fHxIT0Ywf
A",
"Description": "Historical Instrument",
"InstrumentType": "Unknown",
"Status": "Valid",
"DomainCode": "6",
"Start": "2008-01-01T00:00:00.000Z",
"End": "2008-01-01T00:00:00.000Z"
},
{

...

Is that true or I miss some settings in the http request?

Best Regards,

Frederic