CTFs from previous school containing attendance not importing into Edgen

We are not meeting our statutory duty if we cannot maintain complete history of attendance within Edgen via CTF file. Interesting how other schools' XML files exports contains complete history of attendance for every academic years (and from different schools, including primary).

This is not even a hard job, it is literally 4 fields from CTF file per year:

(1)Total Sessions Possible, (2) Sessions Attended, (3) Sessions Authorised, (4) Sessions Unauthorised