Add records to Custom Fields for Posted entries

Dears, Thanks for support

Business Central Cloud, we don’t have any access directly to the database “SQL”

We Extended some pages and tables by adding some fields.

For some reason, the posted data in theses fields deleted after publishing a newer version of our extension ( We used :

            "schemaUpdateMode": "Synchronize",

To avoid data deletion,

Now how to edit these fields again and add or import the lost data, is there are any codes can help for that.