NFMIMS - UNDER HIGHSEAS SALE - Customs - Exim - SEZ

Dear All, We sale import to our sister concern under the High Seas Sale. The product is Copper. As per the New FTP - We have to obtain registration certificate from the NFMIMS website before the arrival of the vessels. We have taken NFMIMS Certificate in the name of original importer and not second importer who by the copper under the High Seas Sale. The reason is that at the time of issue of NFMIMS Certificate, we have to mention foreign currency and in High Seas Sale - the invoice amounts under the INR. Now, custom officer raised the objection that NFMIMS should be in the name of the last purchaser who buys under the High Seas Sale. They try to taking disadvantage of their positions which is comes around in Lakhs. The value of certificate is INR 500/- only and it is only to collect the date of metals imported in India. Can anybody informed us the rules or notification to import metal / copper under the High Seas Sale ? Regards, Ritesh Dave