Before the person relies on a materially different duty, employing entity or placement arrangement. Present the revised terms and effective dates rather than assuming the original L-1B explanation covers the change.
Retain the original and changed versions
Identify what changed and why the knowledge is still relevant to the proposed work. Ask whether additional steps are needed and review actual approval and status dates. A commercial urgency or newly acquired interest should not be treated as permission to perform work outside the assessed arrangement.
The realistic preparation window covers assembling contemporaneous technical records, confirming the ownership chain between the two organizations, and verifying that the continuous qualifying year is unbroken on the payroll as it actually ran rather than as it is remembered. L-1B still requires company-specific special or advanced knowledge, one continuous qualifying year of employment abroad within the preceding three years, a qualifying organizational relationship, and ongoing business abroad plus either U.S. business or compliance with the initial new-office requirements. The prudent sequence is to confirm the grower's continuous year abroad and the affiliate's active status, gather the technical exhibits while the current season's reports are fresh, file with premium processing, and hold the travel and housing arrangements until the approval notice arrives.