Hello,
So far I used All the mods 7 version 0.2.45, install from Curse Forge (App).
I would like to migrate my save (0.2.45) to version 0.4.9 of ATM, but each time I want to join my game (solo), the game tells me that there is a problem.

I would like to convert this save game to 0.4.9 so I can install it on my ATM server, which is 0.4.9. I of course tried to swipe the card on the server, but the server does not load the card and when we want to connect, we are ejected.

So I don't know how to convert this backup.
Thank you in advance for your help

Sorry for the delayed response, worlds made in MC 1.18.1 are incompatible with MC 1.18.2, so you will not be able to easily keep the old worlds

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