How do I create a brand new patch but keep all of my old ones?

DylanRH2009,
that's quite simple.
In ToneLib, go to any patch and then to the individual effects and delete them with: Right mouse button - Remove the effect.
Then you put together your effects and settings as you like.
If everything is the way you want it, you go back to the effect (e.g. A0 xxxx) with the mouse in the front left corner and then right-click again and select the following: Export the patch data to a File.
Then assign a name for your self-created patch and select the location and finish.
Your old patch is still present in the device and will only be replaced if you click on another patch (e.g. from A1 to A3).
Then the program asks you:
Do you want to Save changes to Patch " e.g. A0"?
"Save" overwrites the old patch from your new, self-created patch in disk space and is now firmly on your device.
In "Discard Changes," your self-created patch is deleted in the device and only exists as a patch stored on the hard disk.
If you want to reload it into the device for further tuning, go back to a storage space, right mouse disk: Import the patch data from a file.
Then again the same procedure for storing.