Knockout parameters from All Types pallet

I created a pallet for shutters on a VL 1000. I used one fixture and recorded the pallet as All Types, so that it will work with all the VL 1K's. I accidently recorded the focus and zoom into this pallet.

I tried pressing the pallet and then pressing Open. This brought the one fixture labled as All Types into an editor. I then tried to select the fixture, but there are no parameters present when a scond line appears in the editor. I just want to make the All Types line active so that I can hold backspace and turn a wheel to knockout unwanted parameters. Then I would press Update.

I must be doing something wrong? Any help?
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