The FN011008 SPFx project upgrade rule should supersede FN011009.
Right now, when upgrading projects from SPFx v1.1, you get both resolutions to rename the safeWithCustomScriptDisabled property to requiresCustomScript (FN011008) and remove the safeWithCustomScriptDisabled property (FN011009). In this context, the FN011009 resolution is obsolete, because the property has already been renamed so it no longer needs to be removed. As such, FN011009 should be added as a superseded rule to the configuration of the FN011008 rule.
The FN011008 SPFx project upgrade rule should supersede FN011009.
Right now, when upgrading projects from SPFx v1.1, you get both resolutions to rename the
safeWithCustomScriptDisabledproperty torequiresCustomScript(FN011008) and remove thesafeWithCustomScriptDisabledproperty (FN011009). In this context, the FN011009 resolution is obsolete, because the property has already been renamed so it no longer needs to be removed. As such, FN011009 should be added as a superseded rule to the configuration of the FN011008 rule.