I've just submitted v4.6.0 of Edit Orders for the Zen Cart moderators' review; I'll post back here when it's available for download.
This release contains changes associated with the following GitHub issues:
#45: Remove Ty Package Tracker integration, now provided by a separate plugin.
#189:
Drop support for Zen Cart versions prior to 1.5.6.
#190: Refactoring for zc156+ and restructuring.
#191: Eliminate product-price input fields when pricing method is Auto or AutoSpecials.
#193: Correct MySQL error when tax isn't set.
#195: Make EO more 'screen-reader friendly'.
#198: Correct order-update when an order-total's value is taxed.
#200: eo_get_new_product now returns all products and products_description fields.
#201: eo_get_country now returns its input value, if that value is an array.
#202: Correct PHP notice issued during product addition if ot_loworder_fee or ot_cod_fee is active.