Word File size jumped

If you've activated 'Track Changes', you'll now how copies of whatever has been deleted, plus whatever's been added. Accepting all changes (via the Ribbon's Review tab) and switching off Track Changes should fix that.

Reinserting the b/w line drawing map could increase the file size if the new one is higher resolution or hasn't been compressed in Word the same as the original.

Saving in the .doc format is also liable to result in an increased file size. if you've done that, save it back to the docx format.

Importing content from other sources, with different Styles or Style definitions, or overriding paragraph Styles with hard formatting can also increase the file size.

Updating all references (via Ctrl-A, F9) then saving can also reduce file size.

As you can see, numerous factors can account for significant changes in file size.

1. Fast Saves: Disable this on the Save tab of Tools | Options. This one was eliminated many versions ago.
2. Preview Picture: Clear the check box on the Summary tab of File | Properties. This is the equivalent of the current Thumbnails.
3. Versions (File | Versions): Make sure "Automatically save version on close" is not turned on. Versioning was also eliminated several versions back.
4. Revisions (Tools | Track Changes): Highlight Changes: Make sure "Highlight changes on screen" is turned on (or that "Final Showing Markup" is displayed). Accept/Reject Changes: If "Accept All" or "Reject All" is available then revisions are present; accept or reject all changes, then turn Track Changes off. This one is still a problem (though the path to eliminate markup is different). 
5. Keep track of formatting (Tools | Options | Edit): This is reportedly a major cause of file bloat in Word 2002 and above. I have no evidence of whether it matters in recent versions.
6. Embedded True Type fonts (Tools | Options | Save): Embedding fonts should be avoided wherever possible. This is still true.
7. Embedded linguistic data (Tools | Options | Save). Possibly still an issue.
8. Embedded graphics: When feasible, it is preferable to link the graphics. That is, when you insert the graphic, click the arrow beside Insert in the Picture dialog and choose Link to File rather than Insert or Insert and Link. This is still true, but documents with linked graphics are less portable.
9. Embedded objects: These are even worse than ordinary graphics saved with the document. If you see an { EMBED } code when you press Alt+F9, the graphic is an OLE object. Unless you need to be able to edit the object in place, unlink it using Ctrl+Shift+F9. Still valid.
10. File format: Make sure you are saving as a Word document; in some cases .rtf (Rich Text Format) files are significantly larger than .doc files. As noted, .docx files will be smaller than the corresponding .doc format.