Page History Comparison of Table Changes When Moving Date to Adjacent Cell is Wrong

There are three screen shots attached to this case, before after and comparison. What is happening is that when the exact same string is moved to another column in the same row, a comparison of these two pages results in the displacement of the farthest cell to the right.

The above may be a bit confusing as it was difficult to word, the screen shots tell the story better than I so please review them.