Hi Sheraz,
Apologies for any inconvenience caused.
What you say is weird. Which type of products have doubled the on-hold quantity in Stock Central? All or a specific one?
Are you using any additional ATUM plugins?
We've been testing Stock Central and the on-hold calculated quantities and they are being calculated correctly.
Please remember that the stock on hold includes stock quantities in orders with the 'on hold' and 'processing' statuses. Are you taking this into account?
Best Regards,
José Andrés