If you created a preset and want to copy the A preset to B, take the following steps:
1): First, make a backup of your preset, just to be safe.
2): Select your preset on the Elevate unit
3): Scroll all the way to the right and go to Import to This Preset's <B>
4): Then, you'll get the option to choose which preset you'd like to import from. For this select your preset
5): Then you'll have the option to import the A or B of that preset. Select A
6): When asked if you'd like to overwrite this, select Yes
7): Save the preset.
After this, your A/B will be identical. Then you can customize your B accordingly