@albertca

> What's the problem with with doing the migration using the same modules and 
> then adding the new ones?


The problem:if the module if it intended to be installed on a clean database 
without any records in that model. You will not be able to move data and then 
add the needed module.


> Even more, how could that module X work with an existing database of the same 
> version if it adds a mandatory field and does not have a default value?You 
> will have the same issue installing the module whether data is comming from 
> an older version or is from the current one. 


As I said, it is possible to define the value for a field in the receiving 
database, even if the donor do not have one. But this has to be addressed in 
the scenario.




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http://www.openobject.com/forum/viewtopic.php?p=61337#61337

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