Resolve them during preparation before relying on the letter. Use accurate facts and explain remaining uncertainty.
Do not wait for a deadline
Obtain appropriate records and employer input. A fixed transfer date does not justify inventing an account that the evidence cannot support.
Mark the expiry date, then place the milestones behind it: financial statements ready, evidence table complete, counsel's assessment delivered, any hiring done, packet reviewed. The calendar should include the overseas qualifying employment, entity formation or expansion steps, petition preparation, planned reporting date, and any first-year milestones. Only then does the petition go in, and processing time should be checked against current USCIS posted times rather than assumed; premium handling, where available, shortens adjudication but not preparation. For an established office, the requested initial period and extensions depend on the facts; for a new office, initial approval is generally one year and later evidence must show a qualifying managerial or executive role.