If you go through the Notification no. 18/2012-CE(NT), under Rule 10A(2) of CENVAT Credit Rules, 2004 it provides that
" (2) The manufacturer or producer shall submit the monthly return, as specified under these rules, separately in respect of transferring and recipient registered premises"
It is clear that notification requires to submit the monthly return, however, sub-rule (1) says that excess credit of SAD is to be passed once in a quarter. Earlier, you used to submit the monthly return prescribed under Rule 9(7) of CENVAT Credit Rules, 2004 separately in addition to the monthly ER-1 return. However, consequent to the change in the format of ER-1, it is synchronised in a such a way that it contains the return of Rule 9(7) of CCR,2004 and return of Rule 12 of CER,2002. No separate CENVAT return is required now.
Anyway, till the return is modified, you please show in the credit utilised for other payment and clearly mention in the remarks column that the credit is transferred in terms of Rule 10A of CENVAT Credit Rules,2004.