From memory… Some of the settings work in a global / default way. But once you view an account register then the settings are saved and remembered. So I think you have to wipe out all the saved settings, view one account, set up that view as you like it, then restart MD then try viewing another account register.
Luckily Toolbox extension can do this.
Advanced mode. GeneraL tools menu. Reset window display settings. The last option:
RESET>> Window locations, Size, Sort Orders, One-line, Split Reg, Offset, Column Widths; Dividers, isOpen, isExpanded, isMaximised settings.
Restart MD after running.
Like I saw, can’t remember if this will also save the column width, but worth a try.
Once you wipe the remembered settings, then when you go into any register it will save the settings. When you go to the next register, as no settings exist, it will look to the settings you just saved for the first account. And so on.