The order that the consultant should follow when performing the data migrations is Individuals, then Financial Accounts, then Financial Account Roles, then Financial Account Transactions. This order ensures that the data dependencies and relationships are maintained and that the data integrity and quality are preserved. By migrating Individualsfirst, the consultant can create the records that represent the customers of the bank. By migrating Financial Accounts next, the consultant can create the records that represent the financial products or services that the customers own or use. By migrating Financial Account Roles next, the consultant can create the records that link the individuals to the financial accounts and define their roles or relationships with those accounts. By migrating Financial Account Transactions last, the consultant can create the records that represent the transactions or activities that occur on the financial accounts.