I did it. zlib vars are no longer being used in this script. To copy some of your zlib vars to vProps type zlib chit. in the CLI and choose the ones you need. Then just copy/paste the relevant line, changing the world "zlib" to "set" to create the vProp.
If you want to copy over ALL your vars, then simply copy/paste the following line into the CLI
Note that after the first run of chit, it will compare your properties to the default values for those options and if they are the same, it will remove the unnecessary property, leaving only the properties which are necessary. So don't panic when you see only a few chit properties in preferences file.
ashq import "zlib.ash"; foreach prop,val in vars if(prop.contains_text("chit.") && prop!= "chit.gear.display.aftercore.defaults" && prop!= "chit.gear.display.in-run.defaults") set_property(prop, val);