I'm wondering if the removal of an exact match keyword could cause rankings to drop on Bing and Yahoo, but not on Google.
A website my company manages recently experienced a dramatic loss in rankings for several keywords across Bing and Yahoo. After doing a little research, I realized that the rankings dropped around the same time that we amended the website verbiage to be more broad. Before the change, the website contained several instances of the keyword "hog hunting." Due to a change in strategy, we amended many of these instances to "hunting." However, the keyword "hog" is still mentioned in a different context quite often in the website, include in the company name and website URL.
My working theory is that Google has not dropped our rankings because the engine understands the context around the keywords, and that because the keywords "hog" and "hunting" are mentioned throughout the website, although not together, it can still infer that they are related. However, because Bing and Yahoo are not as advanced as Google, the context is not understood, and the rankings have dropped due to the loss of exact-match keywords.
Can anyone confirm that this could be the cause of the drop in rankings? Any opinions would be appreciated!