Just placing this here since other members may miss my post from earlier. I researched, heavily, this AM the International bus face lift from 1989. The model was actually introduced as a 1990 model in early January/February of 1989.

This is confirmed by the vindecoder breakdown I was able to verify this morning.

Here is the page/chassis I am referring to.
https://imcdb.org/vehicle.php?id=298528#Comment3487261

I don't think you can update these to 1990. I can add it to the list of projects I have in the pipeline. If you want to update the 1989s to 1990 that would be a great help. I just don't know how many different designations we have in the database.

If not now at least the admins and other members know to list newer entries as 1990 models vs 1989 as was previously thought.