Review the effect on the actual employing entity, duties and authorization before travel or work. A new logo may represent a minor branding change or a substantive employment change.
Preserve the effective dates
Ask for the old and new entity information and the employer’s explanation of what changed. Do not reuse the earlier support letter without checking its accuracy. The proposed start date remains separate from the immigration process; corporate restructuring cannot itself grant or extend work permission.
A Canadian citizen can apply at a port of entry the day the file is complete and, if admitted, begin work immediately, so the timeline is set by how quickly the supervising professional's letter and credentials are assembled. A professional order may take weeks to issue a confirmation of standing, a university transcript request has its own queue, and a U.S. employer's legal department may revise the letter several times. 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.