Hi @noah ,
This support has already been added to the Builder API. The new options can be specified when importing app configuration data OR when deploying an app.
When importing app configuration data, there is a new optional 'preserveDivisionSetConfigsOverride' parameter that can be specified. If not specified, it will default to whatever the value is for 'preserveLeaderboardTournamentConfigs'.
When deploying from one app to another, there is a new optional 'divisionSetConfigOverrides' parameter that can be specified in the 'options.meta.excludes' section. If not specified, it will default to whatever the value is for 'leaderboardsTournaments'.
I will endeavour to get our Builder API docs updated with these new parameters. Let us know if you encounter any issues using them.
Thanks!
Greg