If you want a quick and easy way to save the hubs you're talking about just to have them for your records, you can just select all and paste in a word doc as follows:
1. Open up a a blank Microsoft Word doc.
2. Go to the hub you want to save, press control A, (select all) control C (copy),
2. Go back to your blank doc and press control V (paste). Then paste into your Word Document. It will take a bit if you have pictures, etc. and Microsoft will ask you some question which I just answered "yes" or "continue" or something.
I just tried it with my How to Publish a Children's Book, which you can see has lots of content and graphics. However, THE PRINT WAS HUGE after the "paste," so I Selected All (control A) again in the Word doc and changed font to 11 Arial, and clicked View Normal. When I look at document on the screen, the text looks like it's all the way to the left margin with a lot of white space to the right, but when you PREVIEW for PRINTING, you'll see that it looks as if it will print properly. If you try it and it works for you, I'd love to know.