You should be fine then! I forget if the public version before this one included the Sugarcube/Twine update, but if the file name is something like "saves-export-The Sovereigns Ring_D_(62925) PUBLIC-20250725-111924" then you will have to import the save file. If it's something like "The Sovereigns Ring_D_(62925) PUBLIC-20250725-111955" then you will have to load it.
Going forward, this shouldn't be a reccuring issue unless your on mobile (like ios) , where some browsers will wipe the cookies where the saves are stored. If so, you will have to download and import your save file after each play session. I wish there was some work around that, but there isn't at the moment. :/