You can Clear the Filter back to Default by Crafting it
How it Works
Checks the Configured Filter Inventory for Items that have been renamed to the names of Tags OR Tag Getters.
Exmample#1 A filter with 2x cobblestone, the first cobblestone has been renamed to forge:stone, and the second to forge:gems. Any Stone, Smooth Granite/Andesite/Diorite could pass (They match the forge:stone tag), as well as any Diamonds or Emeralds (These match the forge:gems tag).
