When importing Subassemblies, you can also link the subassembly to a parent subassembly, so there is a connection between the two subassemblies.

This is done by adding the Parent subassembly ID to the correct field mapping.

NOTE: When importing a subassembly with a parent subassembly, the parent subassembly ID needs to exists already in the system or be in the rows above the child subassembly ID in the import file. This is because the import is done row-by-row.

The ID to the parent subassembly is found by editing the subassembly you want to have as the parent: