Any central government employee gets transfer from one place to another under public interest will usually get the following components.
1. Journey fare in the entitled class (as on the date of relieving) for self, spouse and the dependents from the present service place to new place of posting.
2. Cost of transportation of personal effects (household luggage) as per the entitlement (quantum of kilos varies as per the post held).
3. Cost of transportation of personal conveyance (Four / Two Wheeler) as per the entitlement.
4. Composite Transfer Grant equivalent to one month's Basic Pay.
Now you have posted your doubt related to the fourth point mentioned above. In this connection as per your explanation, whatever your office has done is 100% right as per the prevailing rules as on date. In this regard you can refer to the Para (Sl.) No.7 of the Resolution issued by the Department of Expenditure, Ministry of Finance, New Delhi dated 25th July 2016 in which it is clearly stated that till a final decision is taken based on the recommendations of 7th CPC, all allowances will continue to be paid at existing rates in existing pay structure i.e. 6th CPC.
As per the said clause though your pay has been revised as per 7th CPC, composite transfer grant would be given as per the Pay in the Pay Band plus Grade Pay equivalent to one month as per 6th CPC only. Whatever news that payments as per new basic pay for transfer grant may be wrong and if at all paid also that has to be recovered immediately.
For revision of allowances portion, one high level committee under the chairmanship of Finance Secretary had been setup by the Government of India on July 22, 2016 and the report of the committee is not yet come up.