Review the transferee’s actual knowledge and proposed duties at that point.
Update the assignment honestly
Identify remaining gaps and the real plan. Do not treat an expected transfer of expertise as completed merely because the colleague has left. The general maximum stay in L-1B status is five years.
A change in duties, work location or the identity of the actual employer can affect the basis of the case and should be reviewed rather than assumed to be covered by the original filing. After the twelfth month of continuous qualifying employment abroad is complete, and while that year still falls within the three years preceding the petition. Define the US tasks, identify why they require the employee’s company-specific specialized knowledge, and collect proof of how that knowledge developed. Start with the assignment’s real launch date and work backward through evidence collection, internal technical review, petition preparation, and travel planning. Corporate approvals are maintained by a function with its own calendar, its own view of what has changed since approval, and no particular awareness that a transfer is being planned around it. Time already spent in a related status counts toward the ceiling, so the arithmetic should be done before a multi-year assignment is promised to anyone. The consequences depend on the actual change, existing permission and case stage, so review them before the employee begins the different work.