Do not assume materially different work is covered by the original proposal or permission.
Review the real next stage
Identify changed duties and supervision before starting them. The success of the first phase does not itself authorize a different assignment.
A change to primarily managerial or executive duties may support an amended or new L-1A petition, which carries a seven-year limit, but the change must be genuine and filed before the new duties begin. Start with the assignment’s real launch date and work backward through evidence collection, internal technical review, petition preparation, and travel planning. The specialist and the company should start identifying which procedure specifications best demonstrate distinctive company-specific knowledge, and gathering evidence of the specialist's role in developing them, well before a transfer date is set. The underlying transfer still needs a qualifying related organization, a continuous qualifying foreign year within the preceding three, and company-specific specialized knowledge. The trigger for review is not the first longer trip but the moment the employer agreed to a different pattern — a new statement of work, an extended client engagement, a change of site.