ID in T_KWCODED_VALUES

Hey, I just added a bunch of values in T_KWCODED_VALUES and see that my new rows do not have ID numbers, but have NULL values in ID. Should I worry? This is in Test, so it won't hurt anything if I have to delete them all and start over. I figure if the database allowed me to create multiple rows with ID=NULL, then it really does not care about that ID.

Clarke