Good to know!
For the object version, for the screenshot I attached, observation is versions (Add a new vesion in my case) always get the latest one and cannot get the correct version of buffer when it serialized. I am not that handy to check how it works in latest UE and we are on custom build engine. However I believe code related to this haven’t been modified. During my several tests mentioned above, StaticLODResource serializes itself and holds its life in DDC only, which make obejct version unnecessary because clearing ddc can fix my case, If I understand correctly for how it works ATM.