CRUD Store create/update problem

Hi,

I'm new in Ext4 and I need you help please.

I have two problems with two-tree D&D with CRUD Store.

1/ In a sorted tree : http://ift.tt/1stD21q

When I drop "item1" from "Tree A" to "Tree B", create is called twice, why ? (it seems a 4.2 bug)

2/ In a non-sorted tree : http://ift.tt/1qlj2jS

When I reorder (invert) "itemA" and "itemB" update isn't called, why ? (update is called if i drop an item on the folder yet)