Replacing instances of nested blocks

What are some possible strategies for replacing instances of blocks nested within other blocks?

Looking for some workflow ideas in Rhino, as well as custom Python scripting to make this work efficiently.

Cheers!

Rhino has a ReplaceBlock command. Have you tried it?

Hi @dale,

As far as I can tell the ReplaceBlock command only works for ‘selectable’ instances of the block.

It treats nested instances as inaccessible as they can’t be selected.

Is my understanding correct?

Yep, my mistake. BlockEdit will work, of course.

So replace the nested block instance during block edit of a parent block?