Since Google and Wikipedia are now actions instead of search templates, your previous abbreviation mappings for these items are no longer effective. Therefore you indeed have to re-train your preferred abbreviations for these two items.
The fastest way to do this: Spell out the complete name GOOGLE (this should reliably select the new Google action), and use ⌥⌘A (Assign Abbreviation) to assign your preferred abbreviation again. You only have to do this once.
If you perform these web searches often via LaunchBar, I would even recommend to assign short, one letter abbreviations such as G for Google, W for Wikipedia or D for DuckDuckGo. Your web search is then just a matter of typing G Space <search-term>.
The fastest way to do this: Spell out the complete name GOOGLE (this should reliably select the new Google action), and use ⌥⌘A (Assign Abbreviation) to assign your preferred abbreviation again. You only have to do this once.
If you perform these web searches often via LaunchBar, I would even recommend to assign short, one letter abbreviations such as G for Google, W for Wikipedia or D for DuckDuckGo. Your web search is then just a matter of typing G Space <search-term>.