Mr Light wrote:
Well, they do have two kids now. Maybe she doesn't want to lose the income of their Dunder Mifflin jobs.
Those could be a legitimate reasons if those were the reasons the writers gave in the script.
I admit to having missed a few episodes due to a busted DVR.
However in the episodes I watched Pam's only reason for being against this was because she loved Scranton and hated Philadelphia. That's not consistent with the way she's been portrayed in the past. Therefore to me it seems manufactured