Reassess the changed duties before relying on the earlier professional plan. The original engineering offer does not establish that a materially different assignment still fits TN.
Review the work that will actually begin
Preserve the original and revised descriptions and identify the actual responsibilities, dates and recipient. Do not solve a changed duty set only by retaining the old title. The appropriate professional and procedural assessment should guide the next step; a commissioning deadline does not guarantee admission or authorize unrelated work.
The first review should produce a dated sequence of evidence collection, travel or petition steps, and a lawful contingency for delay.; each conclusion should point to the record that settles it. Set a realistic timeline for gathering new evidence, confirm the employer still wants to proceed, and keep the applicant's other plans, resignation, travel, housing, flexible until the reviewed strategy is in place. Admission is granted for a period not exceeding three years and is tied to the employment described, so applying against a schedule that is still moving produces either a refusal or an authorization that no longer matches the work.