From the Kemper Manual :
Use the STORE button, on the left side of the display, to save any changes you have made to a module, Rig, Slot, preset, or Performance. Store allows you to save changes to the permanent memory.
Pressing Store in Browser Mode will offer you three different options via the soft buttons: “Replace” will overwrite the currently selected Rig with the new version while keeping the original name, “Store as” will save the Rig under a new name and won't delete the original Rig. “Rename” will allow you to change the name of the current Rig.
If you press the STORE button with a module or section in focus, you have the option to either save a preset of that specific module or section, or to save the entire Rig. If you decide to store a preset you will have the same options to “Replace”, “Store as”, or “Rename”.
Cheers !