Generally .dat files in the bin folder will be updated if you ran a PACU on the CCS Manager server. But in rare cases, a certain content with a specific Agent OS will not be updated due to there is no new update since the last time PACU applied.
This behavior is 'by design'. Please see the Cause section above for more details.
About PACU update details, please confirm below link. You can check which update has been updated in Release_Notes.pdf.