Kanai,
If the dump loaded successfully, then the database on server B must mirror the state of the database on server A, at the time the dump was completed on server A, namely 20.03.2016 at 7:40 AM.
If you are not familiar with the data, and cannnot query a table to check if rows added around that time are in the database on server B, try contacting one of your users for validation.
If that is not possible, I would query the system tables in the database on server B to find the name of any table with a timestamp column and find the last time it was updated in any row.
Best regards,
Jean-Pierre