What I would do is just go ahead and try to re-create that segment.  If you rode it a bunch of times, you probably have a good idea where the start and end points are.  Make a new segment just like the old one and the leaderboard will be populated with all the historic info since day one, for you and everyone else.  

I had to do this a few times with segments I won KOM’s on and the thing was deleted… probably by the original creator who also had the KOM and got angry that I took it away from him.  

Thanks.  Will give it a go

I think they (Strava), in the last effort for “improve” segments, automatically set some segment as “private”, despite the creators made as “public”, apparently those nobody put in favorites never. 

Personally I have no problems in loose around 70 koms after the duplicates cleanup, but with this movement I lost around 600-700 koms all done “blind mode” (without put in favorites but interesting for me) and obviously I can't  redo all this work or ask the creators to view in his created segment section to put one by one on public setting again.

Really bad move from Strava. 

I wanted to reach out and share my experience regarding the disappearance of our regular club race circuit segment. After noticing the segment had vanished, we recreated it, but unfortunately, it disappeared again. Determined to resolve the issue, I located a support link and worked through the process with the bot until I successfully submitted a support ticket.

Following that, I had an email conversation with a team member who was incredibly helpful. Thanks to their assistance, the segment has now been reinstated.

But this is good for one single or a little couple of segments, not for hundred