Missing behavior error when saving documents

[alecpm]

I tried to edit this page and got this traceback:

Traceback (innermost last):

Module ZPublisher.Publish, line 138, in publish
Module ZPublisher.mapply, line 77, in mapply
Module ZPublisher.Publish, line 48, in call_object
Module plone.z3cform.layout, line 63, in __call__
Module plone.z3cform.layout, line 47, in update
Module plone.dexterity.browser.edit, line 58, in update
Module plone.z3cform.fieldsets.extensible, line 65, in update
Module plone.z3cform.patch, line 30, in GroupForm_update
Module z3c.form.group, line 145, in update
Module plone.app.z3cform.csrf, line 22, in execute
Module z3c.form.action, line 98, in execute
Module z3c.form.button, line 315, in __call__
Module z3c.form.button, line 170, in __call__
Module plone.dexterity.browser.edit, line 30, in handleApply
Module z3c.form.group, line 126, in applyChanges
Module zope.event, line 31, in notify
Module zope.component.event, line 27, in dispatch
Module zope.component._api, line 139, in subscribers
Module zope.interface.registry, line 442, in subscribers
Module zope.interface.adapter, line 607, in subscribers
Module zope.component.event, line 36, in objectEventNotify
Module zope.component._api, line 139, in subscribers
Module zope.interface.registry, line 442, in subscribers
Module zope.interface.adapter, line 607, in subscribers
Module plone.app.versioningbehavior.subscribers, line 62, in create_version_on_save
Module Products.CMFEditions.CopyModifyMergeRepositoryTool, line 307, in save
Module transaction._manager, line 147, in savepoint
Module transaction._transaction, line 228, in savepoint
Module transaction._transaction, line 344, in _saveAndRaiseCommitishError
Module transaction._transaction, line 225, in savepoint
Module transaction._transaction, line 713, in __init__
Module ZODB.Connection, line 1000, in savepoint
Module ZODB.Connection, line 547, in _commit
Module ZODB.Connection, line 579, in _store_objects
Module ZODB.serialize, line 419, in serialize
Module ZODB.serialize, line 428, in _dump
PicklingError: Can't pickle <class 'plone.app.stagingbehavior.interfaces.IStagingSupport'>: import of module plone.app.stagingbehavior.interfaces failed

[sauzher]

I ran again the migration from staging and the issue seems gone.
@alecpm @chiruzzimarco