How does one reconcile belief in objective moral values with the notion of moral progress? I've noticed that people tend to prefer moral relativism to moral absolutism because of the idea of moral progress. Moral progress is the notion that the world is on a trajectory towards a better and better understanding of what the right thing to do is.

Morality as being socially constructed seems to harmonize better with moral progress than a fixed, unchanging morality. However, while I believe in moral absolutes myself, I also believe in some version of the moral progress idea, although with serious qualifications. (i.e. I believe that moral progress can  over time result from our efforts to faithfully live out God's Word).

I would like to know of any resources where people have reconciled the idea of moral absolutes with the idea of moral progress, from a Christian perspective.
The idea of Moral Progress is actually less compatible with moral relativism than with absolute morality. The very idea of being "on a trajectory towards a better and better understanding of what the right thing to do is" implies that there is an absolute standard of morality that you can progress towards. Without that there is just "moral change" with no standard by which to judge if any change is "better" or "worse".