Capital gains replacement period extended: replacement assets may be acquired one year before or two years after triggering events. Amendment expands the temporal window for claiming the section 54 capital gains exemption by substituting the permissible purchase period in subsections (1) and (2) so that it reads 'one year before or two years after the date on which the transfer took place' for transfers and 'one year before or two years after the date of receipt of the additional compensation' for additional compensation.