Here is an addon that adds 3 new options to the “Objects->Game->” menu. The options work similar to the other options and allow you to copy/replace lod-levels or their settings from the active object to selected objects.
Copy levels of detail -> add lod levels but keep existing levels
Replace levels of detail -> replace existing levels
Copy level of detail settings -> replace settings of existing levels but keep the lod-object
copy_lod_addon.zip (1.06 KB)
If you find a bug or have other improvements let me know (It’s my first attempt to get familiar with the writing of addons)