Assigning of retest period

Dear Forum

I had one product and retest period asigned for 36 months based on available stability data.

My question is “Retest period can be extended with reprocessing?”

Details are:

Manufacturing date: August 2010
Dispatch date: October 2010
Complaint received: January 2011
Reprocessed: March 2011

Final crystalization step repeated, No stability data available for extention of retest date.

Shall i assign fresh retest date from reprocess date? or Shall i consider from the manufacturing date [Molecule formation date].

Which one is suitable.

Quick response is highly appreciated.

Thanks and regards

in my opinion, retest date remains same as initial manufacturing. Batch to be kept on stability both accelerated and long term stability studies.