Pfizer Pension Payout: Bridging for Contractor Years?

I am a former Pfizer employee of 5 years, but contracted for 4 years (exclusively) with Pfizer prior to my hiring.

While at Pfizer, I recall being told by a colleague about a policy in which colleagues can be bridged for purposes of vesting and pension eligibility if they were contractors prior to hire. I also recall submitting a form and being granted those additional years of service.

I am eligible for the pension payout, but Fidelity (Pfizer) still has my start date as my hire date meaning my payout is essentially halved.

Does anyone know if this bridging for contractor service also gives credit for pension years?

I believe Pfizer and other big Pharma (companies?) had to do this as there was a class action in which these companies were accused of using contractors as employees. For this reason, we are also not able to have named contractors in SOWs and people over 12 months on contract.

Thanks in advance.