Can I batch import multiple dds files for a single hair?

Copy of the error I got if it helps:

The Sims 4 Studio - Version 3.1.4.5

System.NullReferenceException: Object reference not set to an instance of an object.

at S4Studio.ViewModels.Warehouse.WarehousePackageViewModel.<>c__DisplayClass96_0.<Find>b__0(WarehouseResourceViewModel x)

at System.Linq.Enumerable.FirstOrDefault[TSource](IEnumerable`1 source, Func`2 predicate)

at S4Studio.ViewModels.Warehouse.WarehousePackageViewModel.Find(IResourceKey key)

at S4Studio.ViewModels.Warehouse.WarehousePackageViewModel.BatchImport(IEnumerable`1 filepaths)


I'm trying to do hair recolors and wondering if I can import multiple dds files at once vs one at a time? I looked for this info elsewhere and didn't find a thread that was exactly this situation.

Thanks all!