Hi,

you will need a acl_users in your site in order for the migration to pass, so :

All this need to be done in the "Plone4 environment/buildout" :

1) put your Data.fs in the Plone4 buildout and start Zope (bin/instance fg)
2) create another Plone 4 site in this Data.fs, export the acl_users of this new empty Plone 4 site (will create a acl_users.zexp)
3) delete the acl_users of your Plone site you want to migrate and import the previously exported acl_users.zexp into it
4) launch the Plone migration of this site

This should work (anyway, just create a copy of the Data.fs so you can experience different approaches).  We did this in some of our projects (export/import acl_users from site to site) and it worked, just because you said that it was not a problem to create users/groups again for you...

Have a nice end of day,

Gauthier Bastien
Support IMIO - CommunesPlone
rue de la Vieille Sambre 34
5190 Mornimont
Tél: +32(0)71 780979
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Le 26/11/12 09:37, Praful a écrit :
removing acl_users, etc.
Thanks Gauthier. Just to be clear, are you suggesting:
1.  Export my site's acl_users
2. Create new site and import acl_users exported in 1.
3. Delete my site's acl_users.
4. Migrate my site to Plone 4
5. Export acl_users from new site then import into my site.

Thanks

Praful



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