TPS92630-Q1: TPS92630QPWPRQ1 Leadframe of different date code parts

Part Number: TPS92630-Q1

We have received TPS92630QPWPRQ1 bought with different date code parts, upon comparison with X-Ray results, found that the leadframe of DC2224, DC2225, DC2226 differs with DC2414, 2415 as shown below:

Is there any PCN change on leadframe layout of different date code batch of parts? Is it normal as per X-RAY below? Please help advise