Happy day to you too, Patti. Happy Monday morning does seem like an oxymoron.
Anyway, anytime there's a new display name, such as with a member changing the Name in their profile, or with any new registration, MB has to make a change in the database before that new name will show up in the member's post. It's just a glitch in our current system that thankfully won't be in the new one. But clicking on any poster's name, regardless of whether it's a current display name or not, will take you directly to their profile.