Section 32(b) in West Bengal Municipal (Employees' Service) Rules, 2010
(b)service in another post, whether in a substantive or officiating capacity, service on deputation and leave other than extra-ordinary leave count for increments in the time-scale applicable to the post on which the employee holds a lien as well as in the time-scale applicable to the post or posts, if any, on which he would hold a lien had his lien not been suspended;
