Once an update is posted, we currently don't have the ability to go back and amend anything in that update and resave. This feature would be really handy to avoid any spelling errors, typos, incorrect mentions etc.
Editing a comment was introduced in the new commenting experience only in recent releases but according to this page, New commenting experience | Adobe Workfront, it's been removed. I'm wondering if it will be brought back at some point in 2024 but it was there at the end of 2023. Hope that helps! Mary
My apologies, I read that page incorrectly. You can edit a comment but only in the new commenting experience and I guess for only 15 minutes after it was initially made. Documentation on that here: Update work | Adobe Workfront