Dropdown "Show records from field" problem

[Zcast]

Ok, first time I have come across this one. I have 2 tables: cars and trips

Cars simply has one field: pk_cars_ID;

Trips has two fields: pk_trip_ID ans fk_carsID;

I have the fk_cars_ID setup as a dropdown, showing records from cars::pk_cars_ID; but..

the trips::fk_cars_ID dropdown will only show the records I put into the cars::pk_cars_ID starting with the second record and on..it will not show the very first record that I put in....any clues as to what I am doing wrong?

PS..all records show when I use a pop-up, just not a drop-down, weird??