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If you created new fields then the data that used to exist for the fields can no longer be found or formatted. If the field name or the field key is changed it will break data already saved. There is no easy way to fix this.
The data you are seeing for the relationship field is serialized data and is correct.
Each field has two entries in the DB, one for the data using the meta key == to the field name and the other is the field name prepended with an underscore (_) and the value of this entry is the field key.
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