Reply To: Dealing with Asymmetrical Margins In Facing Pages

Hi Jeremy: The best option is to just give up all hope. ;-) The second best option, of course, is to only add or remove an even number of pages at a time.

The third best option is to get clever with a combination of primary text frames, styles that have horizontal alignment “away from spine” or “toward spine” and carefully set up anchored objects based on spine alignment.

The fourth best option is this script that Ole Kvern wrote some years ago (Ole will be at CreativePro Week!)
https://creativepro.com/move-every-object-on-every-page-toward-or-away-from-spine.php