Back to Town procedures under Section 143AA: conditional return of disrupted export cargo with seal checks and LEO cancellation. Establishes procedures for granting Back to Town (BTT) under Section 143AA for export cargo affected by maritime route disruption: exporters or authorised brokers may request BTT across defined scenarios; proper officers must verify shipping bill, container and seal particulars; intact seals matching records allow BTT without examination unless intelligence or risk parameters require inspection; tampered or mismatched seals require 100% examination. Let Export Orders and Shipping Bills are to be cancelled in ICES by the proper officer, with post-EGM cancellations handled when DG Systems enables the facility and manual records maintained until then.