The much awaited land boundary survey of the enclaves on both side of two neighbouring countries Bangladesh and India is expected to end on July 16.
The joint enumeration process began on July 6, and field officials of two countries have almost completed the survey in some places.
The 'Appointed Day' for the deadline for swap of 162 enclaves draws near at midnight of July 31.
In fact, Bangladesh will transfer 51 enclaves to India and India will transfer 111 enclaves to Bangladesh.
Seventy five survey teams are on the ground, comprising two members each, one Bangladeshi and one Indian are assigned in the field survey.
Of the 75 teams, 25 are working in the Bangladeshi enclaves which will go to India while 50 are working in the Indian enclaves which will come to Bangladesh. There is one supervisor for every five teams, a senior official of the Bangladesh Home Ministry explained.
The process of compiling the data will provide exact number of people who will migrate only after July 16.
The survey party asked the enclave residents basic questions like their names, age, parents' names, current citizenship and the citizenship they wish to acquire with effect from August 1, 2015, official said.
The survey teams are also visiting the houses of the elderly or physically challenged, who are unable to walk to the camps.
Meanwhile the officials on the ground have began to understand that in the enclaves not a single Indian enclave residents in Bangladesh has not express their willingness to be citizen of Bangladesh.
There is visible enthusiasm among the enclave residents.
"Nobody is willing to go to Bangladesh so far," said Uttam Sarkar, a land record department official and one of the supervisors, writes a popular newspaper Indian Express.
"It is not a clerical exercise like scrutinising a voters' list. It has become a very emotional process and we have to be compassionate with them," said an official.
On the findings from across the border, officials said about 100 families have expressed willingness to come to India so far, Sarkar told the Indian daily.
One of the Indian officials told Indian media, that at Poaturkuthi enclave, the largest enclave in Bangladesh with 483 families that none in prescribed form has disclosed in the 11th column of those who want to go to Bangladesh. But unfortunately, none has yet opted to switch to Bangladesh
India has plans to organise camps in the enclaves where the residents are asked to register themselves. To accommodate the new citizens, Indian officials has acquired a defunct cold storage and a state-owned godown at Dinhata village in Cooch Bihar, until homes are constructed.