CurseForge Cannot Import the .mrpack — Here's Why
You are not doing anything wrong
The CurseForge desktop launcher has never supported the Modrinth .mrpack format. There is no setting that enables it. The official Reddit answer to "how do I import .mrpack on CurseForge?" is, literally, "You can't."
The correct workflow
Convert .mrpack to .zip
Use our browser-based converter. The output is a standard ZIP CurseForge can work with.
Create a blank CurseForge instance
Match the modpack's Minecraft version and loader.
Extract the ZIP into the instance folder
Right-click instance → Open Folder, then drop the ZIP contents in.
Launch
Full walk-through: CurseForge import guide.
Why CurseForge won't add native support
Modrinth and CurseForge are competing platforms; cross-format support is not a development priority. Hence the third-party converter route.