References, Insertion blocks, typical floors

99% of floors in the condo design are the same.
Duplicating them

- increase file size with factor 99

- make impossible modification after Design Transfer View

STEP ed 3 is one way, but maybe we will have better solution knowing business logic... At least typical floors.
Move IfcMappedItem one level up.

(Remaining 1% of floors is made from the same typical floor parts)


Start by examining the STEP ed 3 approach and the IfcMappedItem placement described in the issue, along with how the Design Transfer View handles duplicated floors. The work is done when typical floors and their repeated parts can be represented without duplicating nearly identical floor data while preserving the remaining unique parts.

Written by the indexing model from the issue text.