KeyError when moving object

[michaelangyk]

Using version 0.6
When moving object using
api.content.move(source=contact, target=portal)
I got this error.
Maybe I install it after portal has existing contents, or because I use email as id?

...
Module plone.api.content, line 2, in move
Module plone.api.validation, line 70, in wrapped
Module plone.api.content, line 2, in move
Module plone.api.validation, line 131, in wrapped
Module plone.api.content, line 174, in move
Module OFS.CopySupport, line 304, in manage_pasteObjects
Module zope.event, line 31, in notify
Module zope.component.event, line 24, in dispatch
Module zope.component._api, line 136, in subscribers
Module zope.component.registry, line 321, in subscribers
Module zope.interface.adapter, line 585, in subscribers
Module zope.component.event, line 32, in objectEventNotify
Module zope.component._api, line 136, in subscribers
Module zope.component.registry, line 321, in subscribers
Module zope.interface.adapter, line 585, in subscribers
Module experimental.securityindexing.subscribers, line 29, in on_object_moved
Module experimental.securityindexing.shadowtree, line 61, in delitem
KeyError: '[email protected]'

[mgrbyte]

@michaelangyk I'll try and find some cycles to look into this in the next week or so.
Can you confirm this does not happen if you have a non-email-address userid?