Downgrade to previous release

[aleks_sh]

Hello

Due to to some problems i need to downgrade to alfresco 3.4d from 4.0b
what is the best way
i have backup, but alfresco 3.4d  not working with it

[mikeh]

The upgrade to 4.0b will have run database upgrade scripts that may mean 3.4 code doesn't work correctly against the new schema.

Are you sure you restored both the database and the contentstore?

Thanks,
Mike

[aleks_sh]

on my test server i just move app_data from 4.0b to 3.4 distr folder
sql setting setting in alfresco-global.properties in 3.4 identical of 4.0b
sorry for poor english 
on 4.0 it worked on 3.4 - not

is exist any downgrade script?

[aleks_sh]

when move app_data back - alfresco 4.0b is started correctly

[mrogers]

There's no such thing as a "downgrade" script.  

If you need to downgrade you will need to restore from backup prior to the upgrade or reverse out the updates that were run by the previous upgrade.

Occasionally downgrade will work if there have not been conflcting changes, but that's not the general case.

[aleks_sh]

thanks for answer
ok i will install previous release and restore data from old backup (maked before upgrade) on another server,
i will have 2 running alfresco - 3.4d and 4.0b
content on 3.4 will be outdated
how i can move to this system data, created after upgrade?