Check the form settings
In the source app, place fields that belong to a table.
In the destination app, place both fields that do not belong to a table and fields that belong to a table.
With Boost! Upsert, you can copy and update record data between apps. This page introduces the steps to copy the values of each row of the source table to records in the destination app and to the tables of those records at the same time.
In the source app, place fields that belong to a table.
In the destination app, place both fields that do not belong to a table and fields that belong to a table.
Select "Upsert" in "Pattern".
In "Destination" of "Record association for updates", specify both fields that do not belong to a table and fields that belong to a table.
Using the values of the fields that belong to a table as keys, a row is added if there is no matching table row.
In "Source" of "Copy or Update Field Mappings", specify at least one field that belongs to a table.
Check that the records are copied or updated as configured.
The upper image shows the source record, and the lower image shows the destination record.