Checkbox for "try to optimize vertices" missing in Babylon properties in 3DSMax

In the SDK documentation it is stated how it is important to check this option
to optimize repeating vertices in models and reduce the size of data and make
the 3D objects perform better. However, this option has been missing from the
objects Babylon properties for many months now. Even with the latest SDK
update, it is still not there. What can be done to get this option back? I
have obviously tried re-installing everything. But the checkbox does not
appear.

It’s enabled by default and not possible to turn it off. Forget about it.

That’s the answer. This is always on now and the checkbox has been removed.
The doc will be updated to reflect this. Regards, Sylvain

Many thanks for the replies! This cleared up the matter!