I looked at that for some of the existing Air Group renames, and could not see it even being used.
For example, I looked for
2.(H)/AufklarGr 33, which I suspected would be referenced in the field.
But no... did not exist.
Also, that field is set to 0 for
2.(F)/AufklarGr 33 (see previous screen-cap).
Open up GC41 and show where the renames exist in the current scenario data.
They are not being shown.
Because I should see a
2.(H)/AufklarGr 33 in the Air Groups with an ID - which is referenced from
2.(F)/AufklarGr 33.

- WiTE2_Rename_Example.jpg (36.66 KiB) Viewed 333 times
Followup...
I manually created a new
2.(rename test)/AufklarGr 33 Air Group and referenced from
2.(F)/AufklarGr 33.
The rename shows up from the Editor Air Group list now, but it does NOT show up in the UI's Reinforcements View... like it isn't really being used by the game.

- WiTE2_Rename_Test.JPG (61.26 KiB) Viewed 328 times