I've just submitted v4.3.3 of EO to the Zen Cart plugins for review and will post back here, once it's available. This release contains changes associated with the following issues, as identified by the GitHub issue number from https://github.com/lat9/edit_orders:

#67: Display message if insufficient product quantity is available.
#70: Product's price not updated if attributes changed.
#71: Align "notifications" with Zen Cart 1.5.6 and later.