Review the changed duties, location and employing arrangement before relying on the existing filing or approval. A delay alone and a materially different assignment are not the same thing. Determine whether an amended or new filing is needed under the actual facts instead of treating the original approval as permission for any group project.
Track the version the agency assessed
Keep the filed assignment description, the revised rollout plan and the effective dates. Explain whether the claimed knowledge is still required and who directs the work. If a customer-site arrangement changes, assess its implications as well. The applicant should begin only work permitted by their actual authorization.
Gathering and organizing internal procedure documentation typically takes longer than a straightforward petition, so preparation should begin well ahead of any planned transfer date. Because the approval date matters, the petition should be filed with margin using current USCIS processing information; premium processing can provide the published adjudication window. The sequence to plan is document gathering, petition preparation and filing, adjudication with or without premium processing, then admission, which for a Canadian citizen follows the approval without a separate visa interview. 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.