Texis does the searches of the webinator database, so there's not really a half upgrade except for not switching search scripts and using the webinator 4 style database and dowalk instead of gw.
The new gw that came with your new texis should behave the same as the old one though. You should not mix versions of the binary programs (tsql, texis, gw, etc). Use all from the same distribution.
The new gw that came with your new texis should behave the same as the old one though. You should not mix versions of the binary programs (tsql, texis, gw, etc). Use all from the same distribution.