In the installers i made by me is not available the backup creation and the installation will reset all your modpack settings
So, how to create a backup?
Step 1: copy and paste to your desktop (***or wherever you want) the vxSettingsApi folder (Games\World_of_Tanks\mods\configs)
Step 2: install the modpack
Step 3: when the installation finished, copy and paste from your desktop (***) the vxSettingsApi folder in your game folder (Games\World_of_Tanks\mods\configs)