I'm trying to find the updated variable names for the Override fields for Panels

Hi everyone. I have an issue that I’m hoping to get some help with. I’m on v10.0.3 and I’m currently updating panel templates from v8.5. The problem that I’m having is not knowing what new variables to use in the Override section when editing panels. This is causing a loss of data because the variables are ‘(not found)’.
proto.keyword is not working and neither is protocol. This is the same for the other “Fields with name” sections. There doesn’t seem to be any viable documentation about this issue either.

Does anyone else have this issue?