The tax deferrals referred to in articles 151 octies to 151 nonies are maintained in the event of the deferral or suspension of taxation of capital gains arising on the occasion of events deemed to put an end to them, until the latter become taxable, whether they are taxed or exempt, or until the occurrence of other events putting an end to them on the occasion of which the capital gains recorded do not benefit from a deferral or suspension of taxation.