Telling that story will only 'reopen old wounds'. [=cause people to think of things from the past that make them sad, angry, etc.]
The district attorney 'reopened' the murder case because new evidence was found.
I'm sorry, but the store is closed. We 'reopen' at nine on Monday.
(..) - Can we focus here, please? Mom and Dad need to have sex. Now, who's gonna tell them, you or me? Nobody's gonna tell them because we're not gonna reopen those wounds. Okay. - How do we get them back together? - No. We? There's no "we" here. We don't. You're the one that split them up. (..)2004 TvShow: Charmed Title: I Dream of Phoebe Season: 6 Episode 15