Blackstone-owned AGS Health on Friday filed updated draft papers for a 48-billion-rupee ($504 million) initial public offering in India, nearly two months after securing the markets regulator's approval ‌for a ⁠listing.⁠The IPO consists of a fresh issue ​of shares worth up to 18 billion rupees, and ​Blackstone selling shares worth up to 30 billion rupees.AGS Health had confidentially ​filed for an IPO ⁠with the ‌Securities and Exchange Board ​of India (SEBI) ​in April, with the proposed ⁠listing valuing the company at about $3 ​billion, Bloomberg News had reported.​The confidential route allows companies to submit draft papers with the regulator for feedback without making the details public, giving them greater flexibility on ‌timing and disclosure.The company is a revenue cycle management (RCM) provider ​that helps ​U.S. hospitals ⁠and healthcare providers manage billing, insurance claims and payments.For the year ended March 31, ​AGS Health posted a profit of 2.07 billion rupees and a revenue of 20.41 billion rupees, draft papers showed.