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Existing records are updated by looking for people with the same name and email address / reference number / mobile phone number / email address date of birth.
Some reports in the system contain a person's Member ID number, which is what the system uses internally to retrieve information about a particular person. This can also be used by specifying the following column. This is particularly useful if you have several thousand people, which are likely to have the same name or reference number, or are looking to update someone's name, reference number or email address.
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