Your model is now inside your older 3ds Max. It is no longer a native .MAX file with history, but you can for your version from this point forward.
Converting a 3ds Max file to an older version online is not a standard native feature, as the .max format is typically proprietary and strictly versioned. However, you can achieve this through official software methods, third-party online converters, or universal file formats. Convert 3ds Max File To Older Version Online
If you do not have a newer version of 3ds Max installed, these online services can help process your files: Your model is now inside your older 3ds Max