Original sentence: Although this seems to suggest a campaign that couldnt quite define itself, it does tie in with its social media positioning.Chicago didnt only change its logo, but it used the opportunity to relaunch its positioning.It changed its strapline from "Stir the soul" to "Let friendship shine"
Edited sentence: Although this seems to suggest a campaign that couldn't quite define itself, it does tie in with its social media positioning.Chicago not only changed its logo, but also used the opportunity to relaunch its positioning.It changed its motto from "Stir the soul" to "Let friendship shine"