Bulk create odd behaviour

[João Pedro]

Hello all,

I don't think I'm doing it right, but what I've understood is that in order to bulk_create a tree you first need to use build_tree_nodes.

So what I've done is a function that generates the tree structure as dict, pass it to build_tree_nodes and then call bulk_create on the result.

It "kinda" worked, because the nodes were created in the database but there was this strange behavior: deleting the parent node didn't delete the children. For instance the previous method I was doing (generating node by node -- so multiple queries) the relationship was kept. 

Does anyone faced this problem before?