Question Changing GUID for meshes

Hello
How can I change the GUID of my FBX mesh without breaking the link to its prefab?

 

The GUID is the reference, so changing the GUID breaks the reference. If you would need to write some editor code that swaps out references.

 

Your prefab has references to your model file and these references are guids. Why would you want to swap the guid of your existing model? Unity assigns these guids and they identify your file.

Your prefab is a text file. You can manually or programmatically swap the prefab to point to another model if you like. First backup, obviously (this stuff can explode). Then search-replace the new guid (from the old mesh and new mesh .meta files) to your prefab, for example:

sed -i 's/oldguid/newguid/g' myprefab.prefab

Then click Refresh on all those files to have it reflected in Editor.

 

Thanks alot, I finally just used a tool to re-generate a GUID and exported the mesh to the new project.