Azure blob Integration with CRM Portals

Hello,

I have recently integrated CRM portal with CRM and enabled Azure blob integration with notes. However, I am facing one weird issues.

When I am uploading files through CRM it is creating a notes file wher url from blob is written to the azure.txt file. However, when I upload any file from Portal the url field in notes is missing

File attached through CRM:

{
    "Name": "Copy of 20161007 Floor Plan inc desk numbers.xlsx",
    "Type": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
    "Size": 20539,
    "Url": "..../Copy of 20161007 Floor Plan inc desk numbers.xlsx"
}

with portal upload it is coming as below

{
    "Name": "Copy of 20161007 Floor Plan inc desk numbers.xlsx",
    "Type": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
    "Size": 20539,
    "Url": ""
}

Can someone please help, if this is a bug or I am missing something?

Thanks