Page title changes not sticking

Not sure about the Word Press version.

I just volunteered to update a website for a non-profit. When I change a page title and click Update, the change is not updated (though it does show in Preview).

For example, I want to change “Exhibitors” to “2015 Exhibitors” but the 2015 never takes. Interestingly, the site has a page entitled “Get Involved.” When I look at it in Word Press, the entry in the Page Title edit field is “Getinvolved.”

So what’s going on? Where is the actual site grabbing this data from?

Thank you very much.