Sub-Block editing indication

It looks like there is a problem with the plugin - it doesn’t like bad objects in blocks and delete them from the block.

It looks like that I have some bad objects in my blocks and never got a problem with them. I need my scenes for rendering only and anything was fine looking. But Block Edit New shows a warning and remove the objects.
Only it helps to undo the block edit, explode the block, repair the bad objects, Copy it to memory per Ctrl-C, undo before block explode and add the repaired object to the block per Ctrl-V. Strange.