It looks the Contributions needs to be continued though the SSA-IN&KO is signed & official because of the following FAQ Extract from EPFO India Site. this needs to be clarified.
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SPECIAL PROVISION FOR INTERNATIONAL WORKERS - FREQUENTLY ASKED QUESTIONS (FAQ)
18) What is the status of the SSAs?
As of today, Social security agreements have been signed with Belgium, France and Germany. But the date of entry into force is yet to be notified. Negotiations are at various stages with The Netherlands, Czech Republic, Hungary, Norway, Switzerland, Sweden, Luxembourg, USA and Australia. Government level talks are on with many other countries where sizable numbers of Indian workers are employed. Although not a formal agreement, there is a reciprocal arrangement between India and Korea to settle the claims of the employees on completion of employment in the host country