Word – Control numbering of captions in Microsoft Word

tl;dr: My figures' numbers are out of order. How do I fix that?

I have a Microsoft Word document based on the HCI Archive Format. Each page is split into two columns, and figures must be placed at the top or bottom of each. To allow text to flow through the columns and past the figures, I have placed my figures with Absolute positioning, with "Top and Bottom" text wrapping style. I then Insert Caption on my images, and Word places a Text Box with Absolute positioning below them.

On one page I have a figure at the top of the left column, and the bottom of the right column. Word insists on numbering the top left one as "Figure 4" and the bottom right one as "Figure 3". How can I fix this so that the top left is Figure 3, and the bottom right is Figure 4?

I have tried deleting and re-adding the captions. When I add to the top left, it becomes Figure 3. When I add to the bottom right, however, it then becomes Figure 3 and the top left image becomes Figure 4.