incomplete flight information

I haven’t seen this in several pages of discussion topics, so I’ll post this here.

Last night, I arrived in Phoenix from SNA aboard WN831. The plane touched down at 2258 local time. Although, on the live flight tracking page it shows the arrival time as 2248.

On the flight log and graph the last entry is at 2245 and the details puts the plane southeast of Buckeye AZ.

In checking a couple of other pages of similar flights at that time I see the same problem.

Is there a reason for the data cutting off at that time?

Thanks.

Mike