configuration export and import not saving menu field value for each link

Problem/Motivation

When I export the configuration for this module from one drupal site so that i can import it to another, my added field's setting for the individual links in the menu did not come across

Steps to reproduce

1. fresh install of D10 using ddev
2. install this module using composer
3. create a new menu (admin/structure/menu/add; i named my menu "app")
4. add a field to the new menu (admin/structure/menu/manage/app/fields; i added a field named "icon" which is a list of text)
5. add a link to the new menu (admin/structure/menu/manage/app/add) and set the new (icon) field to a value from the list (see 2nd attached image)
6. use drush to export configuration
7. use drush to import configuration onto a different site
8. on the imported site, view the menu's link field and the setting is unset (see the 1st attached image)

Proposed resolution

the export and import need to also contain the menu link's field's value