Why isn't a fee (for example a fuel surcharge) pulled into my quotes?
Fees flow into quotes only when they are configured with the correct unit and applicability in Aircraft Fees, so a missing fee usually means its unit or conditions don't match the quoted flight. Review the fee definition — unit, aircraft, and validity — and re-price the quote after correcting it.
Why doesn't the Sales module update after a flight is moved to another aircraft?
When a flight is changed to another tail as an option, the original quote keeps its own itinerary until the change is confirmed or the quote is updated. Verify which trip/option the Sales view is displaying, and refresh or update the quote to reflect the operational change.
Are tax changes applied to quotes created before the change took effect?
No, quotes created before a tax change keep the tax rules that were valid at creation — new rates apply to newly priced quotes. If an old quote must reflect a new tax rate, re-price it after the change date.