I have a friend who did his intial multi training in the Duchess in America and got his Multi Engine on the Duchess.
When he went for his recency, he flew the Flying test by Day, Flight Test by Night and IPC, all the 3 checks required for a Multi Rating on the Piper Seneca. On his Indian license it says he has a multi rating on the Seneca. Recency was done in North America.
So, looking at his case I think you can do your Multi flights on the Seneca. Please mention this to DGCA while checking and go to the right person too. Good luck.