Section 5(2)(j) in The Rajasthan Zamindari and Biswedari Abolition Act, 1959
(j)every mortgage with possession existing on such estate or part thereof on the date immediately preceding the date of vesting shall, to the extent of the amount secured on such estate or part, be deemed, without prejudice to the rights of the State Government under this section, to have been substituted by a simple mortgage;