Pay protection benefits from selection from central govt to state

Sir, I want to know about policies/guidelines regarding service matters, in which a central Govt employees, who have been selected in an autonomous body i.e. University of Rajasthan State Govt on same Grade pay (2800/­). As per advt. 3 years experience in Central/State govt on the post of LDC was sought by the University. Individual applied through proper channel from his central Govt department i.e. BSF with obtaining of NOC. After selection, he was given written condition in joining letter with the terms that his pay should be protected. Accordingly, University protected his pay during the probation period. Individual Lien period was also maintained at his parent department i.e. at BSF. After completion of his probation period, his pay was refixed and reduced on minimum basis on fixation, however, individual has already given written application for extension of his Lien period i.e. for third year, but university confirmed his services with refuse his request as well as with re fixation of his pay on minimum basis. At this situation, I want to know that his pay protection can be protected on the basis of LPC or not. His Lien period can be extended for third year or not. Besides, his past service can be included in new department or not. Also please suggest me that if university protected his pay during the time of probation and after completion of probation period, his pay can be fixed on minimum basis or protected as earlier. Please intimate me that at this situation, Pay protection of employees who have been selected on same grade pay, his pay can be protected or not. Employees is already applied through proper channel after taking NOC from parent department. Please provide me detailed guideline and relaxation in this regard pls. Please suggest me that I want to go with civil writ against unjustice with me. In this regards, please suggest me relief from court can be given at this stage or not on the basis of above facts as well as written evidence held with me.