Just to add another DP: the same as some of the posters above me, my upgrade status says award upgrade confirmed but ticket not issued. Previous tickets along with upgrade tickets also still showing in manage booking online. If it matters for DP, I purchased RT cash fare for tickets in Y and called in to upgrade with miles after confirming PE award availability. Here’s how my calls went:

1. first call agent said they’d process the upgrade and to have miles in my account for the upgrade. They said in 72hrs I’d get an email updating me on the confirmation of my upgrade. At this point manage tickets already showed upgrade tickets confirmed but ticket not issued. I transferred miles into account immediately after hanging up.

2. second call 72hrs later, agent said upgrade was already confirmed and miles will be deducted from account and ticket issued, no estimated timeline on events. Miles still sitting in account.

3. 1 week later, agent said there was an issue on the “ticketing office” side of things but not to worry, the upgrade is already confirmed and miles will be deducted at time of ticket issuing. However when asked for timeline, they said exact timing unknown but likely a couple weeks before check in date (which for me is Feb 2024)