missing "UNDOCK_TIMESTAMP_LT"

Hello, My Name is Andrew and I have a case

I'm testing the Berth-Calls API, and I got something in the results that confuses me , and I have a reason to believe it is missing data

I called the API to trace a TUG with IMO = 9429429 which has MMSI = 622123401

giving the following parameters

("movetype", 0)

("mmsi", 622123401)

(port_unlocode", "EGPSD")

("fromdate", "2020-11-20 08:00:00");
("todate", "2020-11-23 08:00:00");

However I got the response in 3 rows

the first shows it is docked on berth 8 at "2020-11-21 06:36:00"

the second shows it is docked and undocked on another berth which is berth 1

at "2020-11-22 06:13:00" and un docked at "2020-11-22 15:18:00"

the third shows it is docked on berth 8 at "2020-11-23 09:37:00"

my question is , why i didn't get the "UNDOCK_TIMESTAMP_LT" for Berth 8

in the first row

before it is docked on Berth 1