Pay protection for Date of Annual increment

Dear Sir I am a central govt employee (scientist engineer) in service since 2010 in Dept of Space/ ISRO. It has various centres and autonomous bodies under it in the country. I was put in one of the centre. In 2015 I requested for a transfer to one of autonomous body. Such transfers (from centres to autonomous bodies and vice versa) are very common in DoS/ISRO and are given on individual requests and on mutual basis. My transfer was termed as permanent absorption in a central autonomous body. All posts in my existing center (Vikram Sarabhai Space Centre) and the requested autonomous body had been on "SAME TIME SCALE " (Same cadre and same min and max pay scale and same grade pay). My request was approved by both of unit heads and Accordingly I joined the autonomous body on 26th june 2015 on permanent absorption basis. There was no interview or selection procedure followed for my absorption and neither i have been issued any new appointment letter also no pay negotiation were happened with me. My last pay certificate issued to me says my date of annual increment as 1st july 2015. (As per 6th CPC DNI is 1st july). But this annual increment has been denied to me as the admin persons says that annual increment can only be given on completition of 6 months service in the autonomous body. My queries are as under: 1. CCS 2008 rule says annual increment can be given to an employee on completition of 6month in same scale. Government servants completing 6 months and above in the revised pay structure as on 1st of July will be eligible to be granted the increment. The provisions of FR 26 which provide for counting of broken spells in officiation in the higher post for increment, continue to apply for increment under Rule 10 of CCS (RP) Rules, 2008. (I also serviced on a same scale from Jan 2015 to july 2015). 2. The Service which counts for increments include all duty in a post on a time scale (FR 26(a)), both the departments are on same time scale. 3. No pay negotiations were done with me. Had i being told about the denial of annual increment i could not have joined the autonomous body and could have hold by relieving for 5 more days.. 4. For a person transferred from this autonomous body to any centre in DOS/ ISRO does not have such issues and his previous service is counted for increments and further carrier growth. 5. Also DOS has encashed our Earned leaves after our transfer to this autonomous body. Further in my case 7th CPC came to effect from 1st jan 2016 which says two dates of annual increment either 1st jan or 1st July. As per my new department my increment date shifted from 1st july 2015 to 1st july 2016 as per 6th CPC. Is it possible for me to claim a increment on 1st jan 2016 as per 7th CPC. Pl advise. Thankyou.