Position update from Zenfire/RCG

I have noticed there is always a position update from Zenfire between 4:15pm and 4:30pm EST which is when the market is closed for 15 minutes. The funny thing is , let say, if I have a long position of ES at 1300 and then ES closes at 1315 at 4:15pm, Ninjatrader will receive a position update from Zenfire after the market indicating my position is now at 1315 and not 1300.

I also check'd the position in RCG before and after the market close... it was 1300 and then changed to 315.
Is this normal?


~dk