Well, you either need to make a project that matches the settings as they were shot, and work from that. Or...make that project import them, and then bring the bins into a 29.97 project, if that's the frame rate you need to deliver.
BUT...you don't IMPORT the footage. You need to AMA link to the footage (download the AMA plugins first...) and then consolidate them to your media drive. That's the proper workflow.