I have updated my DB from 1.5.5 to 2.1.2 and it works fine, but suddenly I found problem when updating blob fields .The problem is Error "Invalid Blob Id" and happend when i tried to update blobs using stored procedure. So I have to downgrade DB to 1.5.5 , where no problem accurs with blob fields.
Is there any possibility to do this without transfering all the data in new structure v 1.5.5, but only downgrading the old one.

I have tested 2.1.3 the error remains.

Regards
Dimitar Nikiforov