Do not assume individual permission transfers. Assess the actual proposed worker and process.
Keep approval tied to its subject
Similar knowledge does not make personal immigration records interchangeable.
A second employee who could later satisfy the requirements needs a continuous qualifying year with the organisation abroad within the three years before any future petition, and needs genuinely to have acquired the company's internal knowledge, which cannot be conferred by a memo. When the employee will be stationed primarily at an unaffiliated worksite, the petitioner must retain principal control and supervision, and the placement must provide a petitioner-specific product or service requiring specialized knowledge rather than labour for hire. The transfer can be deferred until the applicant has worked with the receiving method; the assignment can be rewritten around the knowledge actually held today; or a different category may fit better and should be assessed on its own conditions. A longer stay at the same worksite doing the same duties raises different questions from a move to a client site the employer does not control, or from duties that drift toward work outside the specialized knowledge described.