Item Search "forgets" your previously explored stations upon rejoin to a DS

I've been exploring the new stations on a DS (dedicated server) that I also host for some friends, and have noticed that after rejoining (the server has not shut down between me leaving and joining), my Item Search screen is not displaying any of my previously discovered stores, requiring me to rediscover them again.

I am verifying this by searching for Hydrogen Offers - something that every station is guaranteed to have.

I've only played on a dedicated server post-Econ2, so unsure if this happens in singleplayer or local multiplayer.

As an aside, I've noticed that the store only shows up in item search after explicitly viewing that station's store block for the first time - not just loading the grid by flying near it. I'm not sure if this is intended, or a bug, but I think it might be quite convenient if the stores auto-registered just by being close enough to them! (idk, something like less than 1km away maybe?) instead of having to go through the airlock and find the store block. After Economy 2, I've sometimes been to a station only to use its Services, not its store or contracts, but would like to still find its store offers via Item Search later!