Plone - Migrating Tips

Due to a zope bug, folders that contain controller page templates will need to be created first, then all of their contents copied over. Otherwise, a _cloned_object_path error is thrown.
When copying controller page template, they lose their actions and validation. These need to be replaced on the new site.

Error

Output MIME type 'image/pcx' for transform
image_to_pcx is not registered in the MIME types registry

Solution

Temporarily move /usr/local/zope/instanceX/Products/PortalTransforms/transforms/image_to_pcx.py to another folder.
Refresh Portal_Transforms in Control Panel -> Products, and try to import site.
Replace /usr/local/zope/instanceX/Products/PortalTransforms/transforms/image_to_pcx.py

Error

AttributeError: isDefaultPageInFolder

Solution
Add the following script(python) to your portal_skins/custom folder, named: 'isDefaultPageInFolder'

from Products.CMFCore.utils import getToolByName 
ptool = getToolByName(context, 'plone_utils')
return ptool.isDefaultPage(context)

Problem
portal_migration does not migrate acl_users.

Solution
Try to force migrate from an older version of plone. Of course, do a dry run first.

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