Folder Connect finds the right files for importing from an online folder using File Kind.
It then reads the files to determine if they can be imported using Validation you preset.
For example, if you want CSV files automatically imported, choose .CSV for it to find. This will ignore other files to avoid errors and skip any presorting of your import files.
Folder Connect also lets you set Validation so it can read files, then decide to import. If you put "CustomerID=123" it would read the incoming files to choose only these.