I really don't know and I've been devastated. What is R10 pass?Liquidation of investment could mean a bunch of things here. Was this liquidation of stocks, liquidation of property, etc? If it was liquidation of property, you'll have the money trail to show. If it was stocks, your bank can help you get the required documents iirc.
Not sure about deviating from original POF and switching to gift deed at this point. Are you sure it isn't an ADR for verification but rather is missing docs? Asking that because if you are R10 pass, it is unlikely for that to happen.