Realms reset the world I import 1.17.1, optifine

Hello, I am facing a problem with Realms. Having made the purchase for a period of 90 days today I decide to import into Realms the survival world in which I played with my friend locally (to enjoy online), everything goes well:

• Creation of the Realms
• Importation of the world...

...Great, but when it's time to appear in the world, suffocation -> death. the reappearance is not done on my set because it is "obstructed". I decide to teleport and switch my game mode to creative to see what happens, all the area has been "reset", so : no mine, no structure, infrastructure, farm, etc...

I hope I won't have to get a refund and that the bug can be fixed in time.

the seed: 8920283052385553005

Thanks for helping me, screen -> Empty world = Realms ; World with stucutre = Solo

Sincerely, oznecniv_

Translated with DeepL : Im French