How to get all records using Invoke-webrequest?/Why Invoke-webrequest returns only first 2000 Records?

invoke-webrequest content returning only 2000 records though it has around 4000 records in web api.
The same url if I give in excel oData Data feed I am getting all the records.

See the below script
Script:

$QueryResult= (Invoke-WebRequest -Uri $ODataURI -UseDefaultCredentials)

[xml]$xmlResult=$QueryResult.content

foreach($obj in $xmlResult.feed.entry.content.properties)
{   
    $Name=$obj.Name;
    $IsAvail=$obj.isAvail.'#text';   
    $PGroup=$obj.PGroup
...
...
}

I am exporting the above result as a CSV file and my CSV file contains only 2000 records. 
But,  $xmlResult.feed.Count --> it Shows 4000 Records.

The same Odata url if I give in excel oData Data feed I am getting all the 4000 records.

So Please help me how can I get all the records using power shell.


Thanks
A Pathfinder..
JoSwa

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