Baseline/Updated program of works

Hi All

I have query that I have recieved Main Contractor Program of works as first program during the execution of project with Baseline dates and Updated/Revised dates together,Program of works also carrying -36 days TF,

I am claiming this program with udated dates as a Baseline program for us with responsibility of -ve TF under Main Contractor...

Is my claim justified !!!or there is better way to handle thesituation !!!!

The program of works fil is provided in pdf format only.

Regards

Khawaja