Provisions in the legislation of a Contracting Party for the reduction, suspension or suppression of pensions and other benefits from one branch of social security where there is overlapping with pensions and other benefits from another branch or with other income, or because of an occupational activity, shall apply also to a beneficiary in respect of pensions and other benefits acquired under the legislation of the other Contracting Party or in respect of income obtained, or occupation exercised, in the territory of the other Contracting Party.