Hi I am not sure if I understand what you said very well. But We are currently running a 2.40 version database and yes we have some backups of that version. The error appears when whe try to do the migration from 2.40 to 2.41. Our databse is currently in 2.39 version. We can migrate to 2.40 till 2.40.10 we encounter an error sayinf 'Schema-validation: missing table [aggregatedataexchange] » but followinf this link « Error when upgrading from 2.39.8 to 2.39.9 - #4 by netroms » we can procede with success. The error "Message : ERROR: relation “trackedentity” already exists » only appears when we try to attend the 2.41 version and that is where we are stucked