MILLIONS of Hong Kong residents holding Certificates of Identity might lose their right to go abroad for years after 1997 if Britain and China refused to co-operateon the passport issue, a lawyer has warned. The spokesman for the Association for Democracy and People's Livelihood, Daniel Wong Kwok-tung, said he was worried that the certificate, which was not a passport, would not be accepted by other countries after 1997. But the Assistant Secretary for Security, Ingrid Ho Poi-yan, said the travel documents would remain valid until they expired, according to an agreement between Britain and China in the Joint Liaison Group (JLG). She said the document was considered a travel document and was accepted by both governments. According to Mr Wong, the three million holders of the document might have to wait for years to get a passport issued by the future Special Administration Region (SAR) Government after 1997. He said he was told by the British senior representative of the JLG, Hugh Davies, that it would take more than three years for the Hong Kong Government to issue British National Overseas passports to three million British Dependent Territory Citizen passport holders.