[Vtigercrm-developers] potentials broken after upfrade to 6.3

[lucia digirolamo]

Hi,

I migrate my vtiger from 6.2 to 6.3: i first created a copy of my 
vtiger's files and db and try the migration on the copy before migrating 
the real crm. Migration showed no error and if I log into vtiger 
everything fine. However, when I enter a potential record, the contact 
id uitype 10 field is empty, while -before migration- it used to show 
the related contact name. I tried to export potential record from old 
vtiger and import them to the upgraded vtiger to see if contact field 
would populate but import fails for all record of csv file. If I click 
on the upgraded vtiger field, the contact list shows correctly and I'm 
correctly able to save the contact id related to the opportunity. So my 
problem now is to retrieve old relations.. is there a way to fix this? 
thanks