Copying hotkey settings between characters (Diablo 2)

Good day,

I decided to set up hotkeys in the game (options -> configure controls) (I use the original client 1.13d)
I set it up for one character, I saw that the hotkeys on other characters remained unchanged (by default).

Looking in the game folder, I saw that the hotkey settings are stored in the file Diablo II/save/Rubattle.net/<character_name>.key
I copied this file from the configured character to the unconfigured one (replacing the old file).

I went to the server and saw that the hotkeys for the second character have changed, and if you delete *.key files, they appear with already configured hotkeys (as I want). But while I was checking hotkeys by entering different characters, the game crashed once.

I wanted to know - if I propagate this file for all my characters, would this be considered cheating or unwanted interference with the server? Manually setting up hotkeys for each character is very dreary.