Saved keymap changes do not remove "Restore" button #94178

System Information
Operating system: Windows-10-10.0.19042-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 496.76

Blender Version
Broken: version: 3.0.0, branch: SelectThrough (modified), commit date: 2021-12-15 12:21, hash: 6349dd43b1
Worked: (newest version of Blender that worked as expected)

Short description of error
When editing Keymaps, the keymaps very often incorrectly show "Restore" button even though there is no difference between saved and active keymap. This is very frustrating as it constantly keeps the user uncertain about the state of the keymap and often leads to corruption of keymaps due to unintended changes.

Exact steps for others to reproduce the error

Make a copy of a default keymap and save it under a new name.
Make modifications to this new keymap
Using the + button, save the the modified keymap under the same name to overwrite it
Notice the "Restore" buttons under keymap entries are still present
Open any section with the "Restore" button and then click it. Observe no changes to the section.
Result: Restore button is still present but it does not restore any changes. This makes user think the given section is modified, while it is not.
Expected: Restore buttons do not appear next to section with no changed entries.

OR:

Make a copy of a default keymap and save it under a new name.
Make modifications to this new keymap
Export this new keymap into a file
Import this keymap back from the file to overwrite it
Notice the "Restore" buttons under keymap entries are still present
Open any section with the "Restore" button and then click it. Observe no changes to the section.
Result: Restore button is still present but it does not restore any changes. This makes user think the given section is modified, while it is not.
Expected: Restore buttons do not appear next to section with no changed entries.

Added subscriber: @Rawalanche

Changed status from 'Needs Triage' to: 'Confirmed'

Added subscriber: @PratikPB2123

Added subscriber: @Hologram

Yesterday, I noticed that there were still keymaps from the Booltool present in my keymap, after having uninstalled the addon over a year ago. When I removed the entries, I could not remove one of the items. Though after saving my preferences, the restore button was still there, when I clicked on it, all of the booltool shortcuts I had previously removed, returned. So this can have unforseen consequences even after saving preferences!

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Saved keymap changes do not remove "Restore" button #94178