Your question is :-
1) Your service period from 2007 to 2017 i.e. 10 years i.e you have entered in pension.
2) You have double UAN. Now you have one UAN i.e. present company UAN.
3) Your transfer has been effected but amount of EPS nil. In this regard I advised you that as per EPFO rule pension amount not transferred from one A/C to other A/C.
4) You can demand Annexure "K" from EPFO for your previous service details.
So, you have not need to take any initiative from your end.
6th April 2018 From India, Gangtok