Master32 has hit ONE of the types of data Im looking for, but there are others.

But even then, its unlikelt to cause problems, you just need to handle
those 'special' elements properly.

Like the PANEL that Master has brought up.
It CAN be 'memcpy'ed, BUT you need to do a pan_create first, and then
memcpy from the old panel ... always SKIPPING the first FOUR bytes, and maybe the last 24...
This way youve done a 'quick' copy of its contents, without disturbing the
internal engine values.