I just completed a trip from Austin to Mumbai. Austin - Houston - LHR was all CO operated. LHR - Mumbai was Jet operated.

The ticket was issued by UA. All legs had a UA flight number.

Continental credited my flights as far as LHR, but are refusing to credit the LHR-BOM segment since it was Jet operated.

I thought that having a codeshare meant that the operator is immaterial? I have scoured CO website for exceptions but could not find any that are applicable. On the Jet and UA websites they state that reciprocal mileage earning does exist.

So....why the issue?