A family of Microsoft word processing software products for creating web, email, and print documents.
Going to Print Preview and back is the best way of updating all fields at once.
Do you by chance have the pictures and their captions in text boxes? If so, the caption numbering will be in the order of the locations of the "anchors" of the text boxes, not in order of the positions of the boxes themselves. First go to Office button > Word Options > Display and check the box to show object anchors. Now go to the page with the problem, and click on the edge of the upper text box. Note which paragraph has the anchor symbol next to it. Now click the lower text box. If the anchor for this one is on a paragraph higher on the page than the first one, drag it to a paragraph below the first one. Then go to Print Preview to update the captions, and they should straighten out.
Jay Freedman MS Word MVP