Have the changed duties and required knowledge assessed before assuming the existing proposal covers them. A project name alone does not determine authorization.
Compare the old and new task descriptions
Identify which knowledge remains relevant, what new responsibilities appear and whether the worksite or supervision changes. Preserve both versions. A business deadline cannot expand an individual’s permission or turn an unrelated assignment into the approved work.
A delayed equipment commissioning date at the U.S. plant changes when the specialized-knowledge work can actually begin, and the petition or status timeline should be reassessed against the real schedule rather than the original one. For L-1B, document the qualifying relationship, doing-business evidence, one continuous qualifying year abroad within the preceding three years, and knowledge that is special or advanced in relation to the organization. If the employee will be stationed primarily at an unaffiliated worksite, that unaffiliated employer cannot principally control and supervise the employee, and the placement cannot be essentially an arrangement to provide labour for hire rather than to use the petitioner’s specialized knowledge.