311. Upgrading title.

The registrar1 has power to upgrade a title in the following circumstances2:

  1.  

    (1)     from possessory or qualified freehold title to absolute freehold title if he is satisfied as to the title to the freehold estate;

  2.  

    (2)     from good leasehold title to absolute leasehold title if he is satisfied as to the superior title;

  3.  

    (3)     from possessory or qualified leasehold title:

    1.  

      (a)     to good leasehold title, if he is satisfied as to the title to the leasehold estate; and

    2.  

      (b)     to absolute leasehold title if he is satisfied both as to the title to the leasehold estate and as to