Migrate modified timestamps between Plone instances

modifieds.py

# Run the following inside bin/instance debug to get list of paths + dates
# print ''.join(['{}|{}\n'.format(b.getURL(), b.modified)
#                for b in app.office.portal_catalog.unrestrictedSearchResults()])
# Put the list in the MODIFIEDS variable below. Then run the script inside
# bin/instance debug on new server


MODIFIEDS = [
    'events',
    'news',
    'foo/bar',
    ...
]

from DateTime import DateTime
portal = app.Plone
for line in MODIFIEDS:
    try:
        path, timestamp = line.split('|')
        obj = portal.unrestrictedTraverse(path)
        obj.setModificationDate(DateTime(timestamp))
        obj.reindexObject(idxs=['modified'])
    except:
        import pdb; pdb.set_trace()

import transaction
transaction.commit()