Resolution:

1.  For "Groups"
The following is the file format and columns definition in the file when exporting groups from the "Export Tab" in Administration Manager:
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\! filetype=Spotfire.DataFormat.Text; version=1.0;

Group name;Domain name;Display name;Email;Member name;Member domain name;Member type;

Where
Group name : Name of the group
Domain name: Name of the Domain
Display name : Display Name of the groups
Group's Email ID: Groups Email ID (Only exists in case of externally synchronized and if there is any email field attribute in external system)

The following attributes contain membership details and will be blank for only group description.

Member name;Member domain name;Member type;

Where

Member name: Name of the group or user
Member domain: Name of the Domain for member group or user
Member type: Member type would be either sub-group or user member of the group.
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2. For "Users"
The following is the file format and columns definition in the file when exporting users from the Export Tab in Administration Manager:
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\! filetype=Spotfire.DataFormat.Text; version=1.0;

User name;Domain name;password; Display name;

Where

User name: Name of the user
Domain name: Name of domain of the user
Password: Password of user in hash format.
Display name: Display name of the user.
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File format and columns definition in the file created from the "Export Tab" in Administration Manager.