However, the rights and obligations of any third party holder of the assets shall remain subject to the law determined by the choice of law rules of the "lex fori". Thus, although the Convention makes provision for the trustee(s) and any third parties, it fails to address the position of the beneficiaries who, for example, might wish to pursue assets intermixed with the trustee's personal property through actions for tracing. One of the problems that beneficiaries might encounter is addressed in Article 12 which considers the problem where the "situs" law does not have a title registration system which reflects ownership registration in a representative capacity. While recognising that the Convention cannot require states to modify their existing registers, it provides that the trustee shall be entitled, in so far as this is not prohibited by or inconsistent with the law of the State where registration is sought, to do so in his capacity as trustee or in such other way that the existence of the trust is disclosed. This implicitly recognises the desirability of all registration systems distinguishing between beneficial and representative titles.