I briefly mentioned this issue here before.
When editing items of code references or move to resources in the UI they are added and updated correctly inside of the config file.
Removing them does not update the config.
As a workaround you can edit one of the remaining items after removal and the list is updated with the removed items missing.
I'd expect the list to be updated when removing items, too.
ResXManager version: 1.95.6617.0
Visual Studio 2022 Professional version: 17.14.9 (July 2025)