How to Migrate a Modpack Between Launchers

Moving from CurseForge to Prism? From MultiMC to ATLauncher? The converted ZIP is the lingua franca between them all.

The universal workflow

  1. Export the source pack

    If the source launcher has an "Export modpack" feature, use it. Otherwise locate the instance folder and copy mods/, config/, etc.

  2. Zip the folder

    Create a ZIP with these folders at the root, mirroring the layout our converter produces.

  3. Import into the target launcher

    Follow the relevant per-launcher guide (CurseForge, Prism, MultiMC, etc.).

Keep settings between migrations

Also copy options.txt (controls), servers.dat (server list), and saves/ (worlds) if you want to preserve gameplay state.