I started a singleplayer survival world, then just a short while later transferred the world onto a server to make it accessible for others. I played on the server quite a bit. Due to server problems I decided to move the world to Minecraft Realms. I downloaded the world from the server, placed it into my Saves folder and uploaded it to my realm. So far, so good.
After joining the realm I noticed two things:
My inventory loadout was still from my singleplayer status shortly after beginning, not my multiplayer sessions.
I can't see recipes for all the items I acquired throughout my playing on the server.
It seems my character is stuck in the status of my beginner character, but what's worse is that even though I possess the items I can craft with, the recipes remain gone until I craft that specific item. For example, I didn't see the recipe for an iron pickaxe, despite having iron ingots and sticks in my inventory. Only when I crafted it from memory it would appear as a notification and therefor in the recipe book. I tried re-mining iron ore and smelting it down, but this didn't reveal the recipes as well. It seems my character is stuck with the recipes I had when I stopped playing singleplayer.
This is happening on 1.14.2, the latest release.
I'm new to Minecraft, I don't know the recipes by heart and would really like to regain all my previously achieved recipes.